Published for the Division of Materials Sciences, Office of Basic Energy Sciences, USDOE, under Contract W-7405-eng-82 with the Ames Laboratory, Iowa State University. Funded by DMS/BES/USDOE, ARPA, ONR, NSF, EPRI, and other agencies, organizations, and individuals.
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Underdoped Cuprates
It has been found by a number of experimental methods that the intensity of low-energy excitations in underdoped cuprates is suppressed over a range of temperatures above the superconducting transition temperature, Tc < T < T*. The connection between this pseudogap and the superconducting gap remains an open question. In these materials the ratio of the superconducting energy gap 2-Delta(0) to k_BTc has been found to be much larger than the BCS weak-coupling value (3.53) and to increase with underdoping.
Angle-resolved photoemission-spectroscopy measurements of the superconducting energy gap in nine underdoped superconducting thin films of Bi2Sr2Ca1-xDyxCu2O8+d cut from three larger samples with Tc = 46, 78, and 89 K are reported by J. M. Harris (Stanford) et al. The authors report that as Tc is reduced by a factor of two by underdoping, the superconducting energy-gap parameter Delta (determined at 13 K) does not fall proportionally, but instead stays constant or increases slightly, in violation of the BCS mean-field-theory result. The measurements also show that Delta is highly anisotropic and is consistent with a d_[x^2y^2] order parameter, and an anisotropic gap (or pseudo gap) persists well above Tc. The authors suggest that the energy scale for pairing is separate from, and higher than, k_BTc.
A phenomenological theory of superconductivity resulting from Bose condensation of preformed pairs coexisting with unpaired fermions has been developed by V. B. Geshkenbein (ETH-Zurich and Landau Institute) et al. The authors show that this transition is more mean-field-like than the usual Bose condensation; i.e., it is characterized by a relatively small value of the Ginzburg parameter. The authors consider the Hall effect in the vortex-flow regime and in the fluctuation regime above Tc, and find that the phenomenology describes reasonably well the data in underdoped YBa2Cu3O7-d but not that in underdoped La2-xSrxCuO4.
An explanation of the large values of 2-Delta(0)/k_BTc in strongly underdoped Bi2Sr2CaCu2O8+d (Bi-2212) is proposed by A. A. Abrikosov (Argonne). His explanation is based on the idea of disruption of the connection between CuO2 bilayers. With increased underdoping, the increased order-parameter phase fluctuations reduce Tc, while the local energy gap undergoes no major changes.
RABiTS
A preprint by A. Goyal et al. (Oak Ridge) reports the fabrication of high-critical-current-density YBa2Cu3O7-d (YBCO) tapes by epitaxial deposition on rolling-assisted biaxially textured substrates (RABiTS). The authors note that the RABiTS technique uses well established, industrially scalable thermomechanical processes to impart a strong biaxial texture to a base metal. This is followed by vapor deposition of epitaxial buffer layers to yield chemically and structurally compatible surfaces. Epitaxial YBCO films grown on such substrates have critical current densities approaching 10^6 A/cm^2 at 77 K in zero field and have field dependencies similar to those of epitaxial films on single-crystal ceramic substrates. The authors point out that deposited conductors made using this technique offer a potential route for the fabrication of long lengths of high-Jc wire capable of carrying high currents in high magnetic fields and at elevated temperatures.
Two preprints by M. Paranthaman et al. (Oak Ridge) report further work related to rolling-assisted biaxially textured substrates. One of these describes the development of three buffer-layer architectures for use on rolled-Ni substrates: Ag/Pd(Pt)/Ni, CeO2/Pd/Ni, and YSZ/CeO2/Ni. The other reports the properties of TlBa2Ca2Cu3O9 (Tl-1223) thick films grown on rolling-assisted biaxially textured Ag substrates. On smooth Ag substrates, the measured critical current densities at 77 K were 6.5 x 10^4 A/cm^2 in zero field and ~10^4 A/cm^2in a field of 0.5 T perpendicular to the substrate.
RBa2Cu3O7-d
The magnetic ordering in (nonsuperconducting) Al-free crystals of PrBa2Cu3O6+x (PBCO, x = 0.35 and 0.92) that do not display the AFII Cu magnetic phase has been studied by A. T. Boothroyd (Oxford) et al. using neutron diffraction. The authors find that the Pr ordering below 20 K is accompanied by a counter-rotation of the Cu antiferromagnetism on each plane of the CuO2 bilayer. The maximum turn angle between the two planes is 60 degrees +- 9 degrees for the x = 0.92 crystal and 40 degrees +- 11 degrees for the x = 0.35 crystal. The authors note that this is the first observation of noncollinear ordering of Cu moments in the bilayer, and is evidence for significant magnetic coupling between the Cu and Pr sublattices.
As reported by H. Aubin (Orsay) et al., the thermal conductivity of a YBa2Cu3O6.9 (YBCO) detwinned single crystal has been studied as a function of the angle of a magnetic field parallel to the CuO2 layers. Measurements were carried out at several different temperatures below Tc (0.5 K < T < 25 K) at a fixed field of 3.0 T. The authors observed a four-fold symmetry, characteristic of a superconducting gap with nodes at odd multiples of 45 degrees in k space. Experiments also were performed to exclude a possible macroscopic origin for the four-fold symmetry, such as sample shape or anisotropic pinning. The authors note that their results impose an upper limit of 10% on the weight of the swave component of the essentially d-wave superconducting order parameter of YBCO.
Two papers by B. Czyzak (Poznan) et al. report on the microwave properties of composites of the superconductor YBa2Cu3O7-d (50wt%) and the ferroelectric relaxor Pb(Sc0.5Ta0.5)O3 (50wt%). One of these papers focuses on the pressure dependence of Tc and obtains dTc/dP = 1.0 K/GPa, while the other examines intergranular weak-link effects via magneticfield-dependent microwave measurements.
As reported by R. Weinstein et al. (TCSUH), U in melt-textured YBa2Cu3O7-d (YBCO) results in small, well dispersed deposits, which serve as effective pinning centers and enhance Jc in unirradiated samples. A second preprint by the same authors reports on the effects of short (~20 micrometers) fission-induced columnar pinning centers in thermal-neutron-irradiated YBCO samples containing U^[235].
The effects of neutron irradiation upon the current-voltage characteristics of YBa2Cu3O7-d (YBCO) twinned crystals have been investigated by B. Brown (Oregon State) et al. The authors examine loglog plots of resistivity rho versus current density J and determine the power-law slope n of the isotherm T_p that separates a nonlinear region below T_p from a linear, dissipative region above T_p. The authors find a systematic connection between n and the Larkin-Ovchinnikov length L_p.
Bi Cuprates
The anisotropic thermal expansion of a Bi2Sr2CaCu2O8+d (Bi-2212) single crystal has been measured by C. Meingast (Karlsruhe) et al. over the temperature range 10-300 K using a high-resolution capacitance dilatometer. The authors find that critical fluctuations dominate the behavior over a wide temperature range near Tc. The authors also found highly anisotropic uniaxial pressure derivatives, dTc/dP_a = 1.6(2) K/GPa, dTc/dP_b = 2.0(2) K/GPa, and dTc/dP_c = -2.8(9) K/GPa, which largely cancel under hydrostatic pressure.
A large depression of Tc at 7 degree [100] tilt grain boundaries has been observed by Q. Li (Brookhaven) et al. in bulk Bi2Sr2CaCu2O8+d (Bi2212) bicrystals by measuring the zero-field electrical-transport properties of the grain boundaries and the constituent single crystals over extended ranges of currents and voltages. The Tc-depressed region was determined to be about 20 nm wide, comparable with the width of the strain field produced by the observed array of grain-boundary dislocations. Superconducting coupling of the grain boundaries was found to increase sharply as the temperature decreased below the grainboundary Tc ~~ 68 K.
Hg Cuprates
Pseudo spin-gap behavior of spin excitations in the lightly doped single-CuO2-layer compound HgBa2CuO4+d (Hg-1201, Tc = 50, 72, and 80 K) has been found by Y. Itoh (Tokyo) et al. using the Cu NMR spin-echo technique. The dependencies of the pseudo spin-gap temperature T_s and the superconducting transition temperature Tc upon the hole concentration are similar to those found in YBa2Cu3O7-d (YBCO).
Longitudinal and transverse magnetization measurements have been performed by G. Le Bras (Saclay) et al. on a HgBa2CuO4+d (Hg-1201, Tc = 95 K) single crystal to determine the superconducting parameters lambda_|| ~~ 1400 Angstroms and xi_|| ~~ 20 Angstroms. The authors also found the anisotropy parameter to be gamma = (m[perp.]/m||)^[1/2] ~~ 30, the lowest of the known values for the HgBa2Can-1CunO2n+2+d family.
Single crystals of (Hg,Cu)Ba2CuO4+d [(Hg,Cu)-1201] have been grown by D. Pelloquin et al. (Caen). The as-synthesized crystals exhibited an onset Tc of 96 K with sharp superconducting transitions. A structural study by x-ray diffraction yielded the formula Hg0.84Cu0.16Ba2CuO4.19. By performing magnetization measurements and using a 3D-2D decoupling formula, the authors obtained an anisotropy parameter of gamma = 29 for this material.
Vortices
The dynamics of driven periodic systems subjected to quenched disorder have been considered by I. Aranson (Bar Ilan and Argonne) and V. Vinokur (Argonne). The authors find that hysteretic depinning and dynamic multistability of the driven periodic system may appear with a purely elastic description as a result of coupling of the velocity field to some additional mechanism promoting the motion. The authors investigate two such mechanisms, which are relevant to vortex dynamics in type-II superconductors: (a) local heat generation due to vortex-lattice motion, giving rise to a local suppression of the pinning force, and (b) deformation of the core of the moving vortex.
A preprint by D. S. Fisher (Harvard) develops a description of a dislocation-free elastic glass phase in terms of domain walls, and uses this as the basis of a renormalization-group analysis of the energetics of dislocation loops added to the system. The author finds that even after optimizing over possible paths of large dislocation loops, their energy is still likely to be positive when the dislocation core energy is large. This implies the existence of an equilibrium elastic glass phase in three-dimensional random-field XY magnets, and a dislocationfree, bond-orientationally ordered Bragg-glass phase of vortices in dirty type-II superconductors.
Magnetic hysteresis measurements have been performed by M. C. de Andrade (UC-San Diego) et al. on a single crystal of the electron-doped superconductor Pr1.85Ce0.15CuO4-y (Tc ~~ 22.5 K) in magnetic fields H applied parallel to the c axis. The authors found evidence for a peak effect and dimensional crossover. The authors also present a quantitative low-temperature magnetic phase diagram.
The magnetic susceptibility of type-II superconducting disks and rings has been considered theoretically by E. H. Brandt (MPI-Stuttgart). The author presents numerous results for the hysteretic magnetization curves and the complex susceptibility chi' - i chi" of superconducting samples with and without flux creep.
Thin Films
As reported by V. A. Vas'ko et al. (Minnesota), the critical current of a thin film of the high-Tc superconductor DyBa2Cu3O7-d (DBCO), when incorporated into a heterostructure in which it is separated from a ferromagnetic underlayer of La2/3Sr1/3MnO3 by an undoped ultrathin La2CuO4 layer, is strongly suppressed by current flowing in the ferromagnetic film. A control experiment with a Au film replacing the ferromagnet did not show such a response, and resistive heating was ruled out by additional measurements. The authors suggest that the effect is caused by pair-breaking associated with spin-polarized carriers being injected into the superconductor.
The in-situ growth of superconducting thin films of HgBa2CuO4+d (Hg1201) by sputtering onto a (100) SrTiO3 substrate is reported by K. Mizuno et al. (Matsushita Electric). The films were found to have caxis orientation and to have a superconducting transition at ~75 K.
Two preprints by H. Sato et al. (NTT) report the growth of La2-xSrxCuO4 (LSCO) thin films by reactive coevaporation onto (001) LaSrAlO4 (LSAO) substrates. The zero-resistance Tc was found to be 44 K, higher than that for bulk samples. The authors attribute this to the strain generated by the lattice mismatch; the a axis is under compression and Tc is accordingly raised. The authors also obtained superconductivity in LSCO films only two unit cells thick without any buffer or cap layers. Evidently, the minimum number of CuO2 planes necessary for superconductivity is less than or equal to four.
The microwave power dependence of the surface impedance of YBCO epitaxial films in a dc magnetic field up to 0.7 T has been measured by M. Tsindlekht (Hebrew University) et al. The authors find that the surface impedance of the films in the linear regime is dominated by weak links at low dc field and by vortices at high dc field, but that the microwave power dependence of the surface impedance arises mostly from hysteretic rf vortex penetration.
Applications
The intermodulation power and quality factor Q of high-Tc superconducting microstrip resonators of different shapes have been calculated by T. Dahm and D. J. Scalapino (UC-Santa Barbara). The authors also considered the case of two microstrips carrying in-phase or out-of-phase currents and found that when the currents are in phase, the quality factor and intermodulation power are significantly lower than when the currents are out of phase.
A high-Tc planar filter using a dual-mode disk resonator has been proposed by A. Enokihara and K. Setsune (Matsushita Electric) for handling higher power signals and miniaturizing the filter configuration. Low losses were measured, and good linearity in the filter responses was confirmed by observing the intermodulation distortion using the two-tone method.
Theory
A paper by C.-R. Hu (Texas A&M and TCSUH) points out that a previous prediction of midgap surface states (MSSs) on non-{n0m} surfaces of d_[x^2-y^2] superconductors can be extended to midgap interface states (MISs), which exist at almost all interfaces between grains of such superconductors of different principal-axis orientations. The author shows in a model calculation that such states can give rise to zero-bias conductance peaks (ZBCPs) in quasiparticle tunneling along any axis. The author suggests that such MISs are responsible for most if not all of the ZBCPs observed in tunneling experiments on the high-Tc superconductors.
The dynamical Hall response in a correlated electron system has been analyzed by P. Prelovsek (Ljubljana) within the linear-response theory for tight-binding models. The author finds that the dc Hall constant for a single quasiparticle at T = 0 can be expressed explicitly via the charge stiffness, and a semiclassical result is recovered. As expected, a hole-like response is found for the mobile hole introduced into a quantum antiferromagnet, as represented by the t-J model.
An exactly soluble one-dimensional model of electrons interacting with order-parameter fluctuations associated with short-range order has been considered by R. H. McKenzie and D. Scarratt (New South Wales). The authors calculate the energy and momentum dependence of the electronic self-energy and spectral function, and find non-Fermi-liquid features similar to those found for the two-dimensional Hubbard model: a pseudogap, shadow bands, anomalies in the self-energy, and breakdown of the quasiparticle picture. Deviations from Fermi-liquid behavior are largest close to the Fermi surface and as the correlation length increases.
Other Activities
An anomalous position of the central peak of magnetic hysteresis loops has been observed by M. R. Koblischka et al. (Praha) in (Bi,Pb)2Sr2Ca2Cu3O10+d [(Bi,Pb)-2223]/Ag tapes at positive external fields B_[ext] for dB_[ext]/dt < 0 (t = time). The authors explain the effect by modeling the grain structure as a system of superconducting disk-shaped grains touching each other in small, but highly conducting contacts at the disk circumference.
Overviews
A review of recent experimental investigations of the peak effect in the f-electron superconductor CeRu2 and the high-temperature superconductor YBa2Cu3O7-d has been prepared by G. W. Crabtree (Argonne) et al. The authors discuss the results within the context of relevant theoretical models (66 refs.).
Recent research on the RNiO3 (R = rare earth) perovskites, which are nonsuperconducting oxides that show metallic conductivity, is reviewed by M. L. Medarde (ETH Zurich and PSI). The author discusses the possible mechanisms responsible for the metal-insulator transition, which is the major open question for these materials (49 refs.).
A summary of the Fermi-liquid theory of superconductivity and unconventional pairing in heavy-fermion metals has been prepared by J. A. Sauls (Northwestern) and D. Rainer (Bayreuth). The authors discuss d-wave pairing in the cuprates and multi-component models for UPt3 (47 refs.).
A manuscript version of lectures by D. Dew-Hughes (Oxford) gives an introduction to the microwave properties of superconductors and how they are measured, and surveys demonstration devices and applications in which these properties are exploited. In particular, the author discusses the fabrication and properties of thallium-based HTS thin films and devices made from them (25 refs.).
An overview chapter by D. R. Jackson et al. (TCSUH) gives closed-form approximate formulas describing the resonance frequency, input resistance at resonance, radiation efficiency, bandwidth, and directivity of rectangular microstrip patch antennas (17 refs.).
A brief survey of recent studies on the magneto-optical imaging of the magnetic flux and current distributions in polycrystalline high-Tc superconductors has been prepared by A. Polyanskii (Wisconsin and Chernogolovka) et al. The authors report studies of single grain boundaries in YBCO bicrystals, YBCO thick films deposited on an IBAD buffer layer grown on a polycrystalline Hastelloy substrate, and Bi-2223 tapes (12 refs.).
Contributed by John R. Clem
High-Tc Update is available without charge to interested persons. Recipients are expected to participate in this information exchange by sending us preprints, reprints, meeting news, research news, etc. Contributions to defray the cost of newsletter printing and mailing are welcome.
A. A. Abrikosov, "On the Huge BCS Ratio in Strongly Underdoped High-Tc Cuprates." Contact Janice Coble, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439; telefax (708) 252-9595; e-mail janice_coble@qmgate.anl.gov. 74.20.De; 74.20.Fg; 74.20.Mn; 74.25.Dw.
A. Aburto and L. Fruchter, "Flux Line Pinning in the Organic Superconductor kappa-(BEDT-TTF)2Cu[N(CN)2]Br." To be published in Physica C (in press). CNRS, Laboratoire de Physique des Solides, Universite Paris-Sud, F-91405 Orsay Cedex, FRANCE.
L. Alff, U. Schoop, R. Gross, R. Gerber, and A. Beck, "Ramp-Edge Josephson Junctions with Nd1.85Ce0.15CuO4-y Barriers." To be published in Physica C (in press). Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba, Ibaraki 305, JAPAN; R. Gross' e-mail gross@colorix.ph2.unikoeln.de. Key words: high-temperature superconductivity, Josephson junctions, resonant tunneling, critical current density, superconducting pn junction.
I. Aranson and V. Vinokur, "Hysteretic Depinning of Vortex Systems." Submitted to Phys. Rev. Lett. Contact Janice Coble, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439; telefax (708) 252-9595; e-mail janice_coble@qmgate.anl.gov. 74.60.Ge; 68.10.-m; 05.60.+w.
H. Aubin, K. Behnia, M. Ribault, R. Gagnon, and L. Taillefer, "Angular Position of Nodes in the Superconducting Gap of YBCO." Contact K. Behnia, Laboratoire de Physique des Solides, Universite de Paris-Sud, Centre D'Orsay, Batiment 510, F-91405 Orsay, FRANCE; telephone +33 1 69 15 53 22; telefax +33 1 69 15 60 86; e-mail kamran@lps.u-psud.fr. 74.25.Fy; 74.72.Bk; 72.15.Eb.
X. Z. Bao, J. Nyhus, Y. Maeno, Y. Tanaka, S. Sakita, and T. Fujita, "Relation Between Transport, Structural and Superconductive Properties in La2-x-yNdyBaxCuO4." To be published in Physica C (in press). Department of Physics, Faculty of Science, Hiroshima University, Higashi Hiroshima 739, JAPAN. Key words: 1/8 problem, La2-x-yNdyBaxCuO4, thermoelectric power, electrical resistivity, structural phase transition.
A. F. Barabanov, R. O. Kuzian and L. A. Maksimov, "The Spectral Function of Small Spin Polaron in 2D Spherically Symmetric Antiferromagnetic State." Submitted to Phys. Rev. B. Institute for High Pressure Physics, Troitsk, Moscow Region, 142092, RUSSIA. 71.27.+a; 71.10.Fd; 75.30.Mb.
L. V. Belevtsov, S. S. Shevchenko, and V. N. Tulupenko, "Critical Current of Oriented High-Tc Superconductors." To be published in Physica C (in press). Department of Physics, Donbass State-Supported Machine-Building Academy, Kramatorsk 343916, Donetsk Region, UKRAINE. Key words: granular superconductivity, weak coupling, critical current density.
A. T. Boothroyd, A. Longmore, N. H. Andersen, E. Brecht, and Th. Wolf, "Novel Pr-Cu Magnetic Phase at Low Temperature in PrBa2Cu3O6+x Observed by Neutron Diffraction." To be published in Phys. Rev. Lett. Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX1 3PU, UNITED KINGDOM; telephone +44 1865 272-376 or -200; telefax +44 1865-272 400; e-mail a.boothroyd1@physics.oxford.ac.uk. 75.25.+z; 74.25.Ha; 74.72.Bk; 75.50.Ee.
Ernst Helmut Brandt, "Susceptibility of Superconductor Disks and Rings With and Without Flux Creep." Submitted to Phys. Rev. B. Institute fuer Physik, Max-Planck-Institute fuer Metallforschung, D-70506 Stuttgart, GERMANY. 74.60.Ge; 74.60.Jg.
B. Brown, J. M. Roberts, J. Tate, and J. W. Farmer, "Neutron-Irradiation Effects on the V-I Characteristics of YBa2Cu3O7-d Twinned Crystals: Linking Transport Results in a Variety of Copper-Oxide Superconductors." Submitted to Phys. Rev. B. Department of Physics, 301 Weniger Hall, Oregon State University, Corvallis, OR 97331; e-mail browbran@ucs.orst.edu. 74.60.Ge; 74.62.Dh; 74.60.Ec.
Guanghan Cao, Xuanjia Zhang, Hongqing Song, Yuewu Zeng, Zhengkuan Jiao, and Qirui Zhang, "Growth and Characterization of Pr(Sr0.65Ba0.31Pr0.04)2(Cu0.94Al0.06)3Oy Single Crystals." Department of Physics, Zhejiang University, Hangzhou 310027, PEOPLE'S REPUBLIC OF CHINA.
Y. S. Chen, N. J. Wu, D. Liu, J. Fan, S. Dordevic, and A. Ignatiev, "Uncooled Infrared Detectors for Space Monitoring Applications." Preprint #96:123; submitted to Proc. of the Space Tech. and Appl. Int. Forum (STAIF-97), Albuquerque, NM, Jan. 1997. Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5932; telephone (713) 743-8200; telefax (713) 743-8201; e-mail preprints@www.tcs.uh.edu.
R. Menegotto Costa, P. Pureur, L. Ghivelder, J. A. Campa, and I. Rasines, "Low Field Fluctuation Magnetoconductivity in Bi2Sr2CaCu2O8: Critical, Gaussian and LLL Scalings." Presented at the XXI Int. Conf. on Low Temp. Phys. (LT21), Prague, Czech Republic, Aug. 8-14, 1996; to be published in Czech. J. Phys., Vol. 46 (1996). Instituto de Fisica, UFRGS, P.O. Box 15051, 91501-970 Porto Alegre, BRAZIL.
G. W. Crabtree, M. B. Maple, W. K. Kwok, J. Herrmann, J. A. Fendrich, N. R. Dilley, and S. H. Han, "Peak Effect in CeRu2 and YBa2Cu3O7-d." Submitted for the H. Umezawa Memorial Issue of Physics Essays. Contact Janice Coble, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439; telefax (708) 252-9595; e-mail janice_coble@qmgate.anl.gov.
W. R. Czart, T. Kostyrko, and S. Robaszkiewicz, "Superfluid Characteristics of the Attractive Hubbard Model for Various Lattice Structures." To be published in Physica C (in press). Institute of Physics, A. Mickiewicz University, Umultowska 85, PL-61614 Poznan, POLAND; e-mail czart@phys.amu.edu.pl. Key words: negative-U Hubbard model, London penetration depth, high Tc. 74.20.-z; 71.28.+d; 74.25.Ha.
B. Czyzak, B. Andrzejewski, B. Hilczer, J. Stankowski, S. Regnier, J. Marfaing, and C. Caranoni, "Properties of YBa2Cu3O7-d-Pb(Sc0.5Ta0.5)O3 Superconducting Composites." Submitted to Phys. Status Solidi A. Contact B. Andrzejewski, Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17/19, PL-60179 Poznan, POLAND; telephone +48 61 612 300; telefax +48 61 684 524; e-mail and@ifmpan.poznan.pl. 74.10.+v.
B. Czyzak, J. Stankowski, B. Hilczer, M. Krupski, P. Morawski, B. Andrzejewski, J. Marfaing, S. Regnier, and C. Caranoni, "A High-Pressure Microwave Study of the YBa2Cu3O7-d-Pb(Sc0.5Ta0.5)O3 Composite." Submitted to Acta Phys. Pol. A. Contact B. Andrzejewski, Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17/19, PL-60179 Poznan, POLAND; telephone +48 61 612 300; telefax +48 61 684 524; e-mail and@ifmpan.poznan.pl. Key words: ferroelectrics, high-Tc superconductors, grain boundaries.
T. Dahm and D. J. Scalapino, "Intermodulation and Quality Factor of High-Tc Superconducting Microstrip Structures." Submitted to J. Appl. Phys. Department of Physics, University of California, Santa Barbara, CA 93106-9530; telephone (805) 893-2246; telefax (805) 893-8838; e-mail dahm@salar.physics.ucsb.edu. 85.25.Am; 84.40.Az; 85.25.Na; 74.76.Bz.
A. Das, R. Suryanarayanan, I. Zelenay, and B. Dabrowski, "Structure, Superconductivity and Thermopower of Nd1-xPrxSrBaCu3O7." To be published in Physica C. Contact R. Suryanarayanan, Laboratoire de Chimie des Solides, Universite Paris-Sud, UA446, CNRS, Bat. 414, F-91405 Orsay Cedex, FRANCE; e-mail suryan@isma.isma.u-psud.fr.
M. C. de Andrade, G. Triscone, M. B. Maple, S. Spagna, J. Diederichs, and R. E. Sager, "Dimensional Crossover and Peak Effect in a Superconducting Pr1.85Ce0.15CuO4-y Single Crystal." To be published in Physica C (in press). Department of Physics, University of California at San Diego, 9500 Gilman Drive, 0319, La Jolla, CA 92093-0319; M. B. Maple's telephone (619) 534-3969; telefax (619) 534-1241. Key words: peak effect, magnetization, single crsytals, electron doped.
D. Depla, R. Mouton, and S. Hoste, "Modelling of Reactive Spray Drying of Precursors for High Tc Superconducting Ceramics." To be published in J. Eur. Ceram. Soc. Laboratory for General and Inorganic Chemistry, University of Ghent, Krijgslaan 281, 9000 Ghent, BELGIUM.
A. Deptula, W. Lada, T. Olczak, K. C. Goretta, A. Di Bartolomeo, and S. Casadio, "Sol-Gel Process for Preparation of YBa2Cu4O8 from Acidic Acetates/Ammonia/Ascorbic Acid Systems." Submitted to Mater. Res. Bull. Institute of Nuclear Chemistry and Technology, PL-03-195 Warsaw, POLAND. Key words: superconductors, sol-gel chemistry.
David Dew-Hughes, "Microwave Properties and Applications of High Temperature Superconductors." To be published in the Proc. of the NATO Advanced Research Workshop on Microwave Physics and Techniques, Sozopol, Bulgaria, Sept. 30-Oct. 5, 1996. Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UNITED KINGDOM; telephone +44 1865 273020; telefax +44 1865 273010; e-mail david.dewhughes@eng.ox.ac.uk.
M. Dhalle, M. Cuthbert, M. D. Johnston, J. Everett, R. Fluekiger, S. X. Dou, W. Goldacker, T. Beales, and A. D. Caplin, "Experimental Assessment of the Current Limiting Mechanisms in BSCCO/Ag HTS Tapes." To be published in Supercond. Sci. & Technol. Departement de la Physique de la Matiere Condensee, Universite de Geneve, 24 Quai Ernest-Ansermet, CH1211 Geneva 4, SWITZERLAND; telephone +41 22 702 6578; telefax +41 22 702 6869; e-mail marc.dhalle@physics.unige.ch. 74.60.Ge; 74.60.Jg; 74.72.Hs; 85.25.Kx.
Akira Enokihara and Kentaro Setsune, "High-Tc Superconducting Planar Filter for Power Handling Capacity." To be presented at the Microwave Workshops and Exhibition (MWE '96), Yokohama, Japan, Dec. 1996. Central Research Laboratories, Matsushita Electric Industrial Co., Ltd., 3-4 Hikaridai, Seika, Soraku, Kyoto 619-02, JAPAN; telephone +81 774 98 2514; telefax +81 774 98 2585.
A. V. Filatov and S. F. Konovalov, "Low-Hysteresis Interaction of a Hard Type II Superconductor with a Permanent Magnet." To be published in Physica C (in press). Department of Navigation Devices, Moscow N.E. Bauman State Technical University, 5, 2nd Baumanskaya Str., Moscow 107005, RUSSIA.
Daniel S. Fisher, "Stability of Elastic Glass Phases in Random Field XY Magnets and Vortex Lattices in Type II Superconductors." Department of Physics, Harvard University, Cambridge, MA 02138. Preprint available at cond-mat@xxx.lanl.gov (#9610146).
I. R. Fisher and J. R. Cooper, "Effect of Sample Density on the Resistivity and Hall Coefficient of Polycrystalline La1.83Sr0.17CuO4." To be published in Physica C (in press). IRC in Superconductivity, University of Cambridge, Madingley Road, Cambridge CB3 0HE, UNITED KINGDOM; telefax +44 1223 337074; e-mail irf1000@hermes.cam.ac.uk. Key words: electrical resistivity, Hall effect, granular superconductivity.
I. M. Fishman, W. R. Studenmund, G. S. Kino, and J. Giapintzakis, "Photothermal Measurements of Differential Reflectivity of YBCO Related to the Symmetry of the Superconducting Order Parameter." To be published in Physica C (in press). Contact G. S. Kino, E. L. Ginzton Laboratory, Stanford University, Stanford, CA 94305-4085; telefax (415) 725-7509.
V. G. Fleisher, R. Laiho, E. Laehderanta, Yu.P. Stepanov, and K. B. Traito, "Magnetization of Submicron Superconducting YBCO Particles: Isolated Single Vortices Versus Critical State Model." To be published in Physica C (in press). Contact E. Laehderanta, Wihuri Physical Laboratory, University of Turku, 20500 Turku, FINLAND; telefax +358 21 231 9836; e-mail erkki.lahderanta@utu.fi.
V. B. Geshkenbein, L. B. Ioffe, and A. I. Larkin, "On the Superconductivity in the System with Preformed Pairs." Preprint #ETHTH/96-42. Institut fuer Theoretische Physik, ETH-Hoenggerberg, CH-8093 Zurich, SWITZERLAND.
Joern Goeres, Pang-Jen Kung, D. B. Fenner, and J. I. Budnick, "In-situ Plume-Emission Monitoring During Pulsed-Laser Deposition of YBa2Cu3O7-d and YSZ Thin Films." To be published in Rev. Sci. Instrum. Contact D. B. Fenner, Fenner Engineering Associates, 7 Metacom Drive, Simsbury, CT 06070; telephone (860) 651-1250; telefax (860) 651-8306; e-mail u15710@snet.net. 81.15.Fg; 78.40.-q.
K. C. Goretta, Ming Jiang, D. S. Kupperman, M. T. Lanagan, J. P. Singh, N. Vasanthamohan, D. G. Hinks, J. F. Mitchell, and J. W. Richardson, Jr., "Strength and Flexibility of Bulk High-Tc Superconductors." Submitted to IEEE Trans. Appl. Supercond. Contact Janice Coble, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439; telefax (708) 252-9595; e-mail janice_coble@qmgate.anl.gov.
Tomoko Goto, "Effect of F-Doping in Solution-Spun HgxBa2Ca2Cu3Re0.2Oy Filament." Presented at 9th Int. Symp. on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996. Department of Materials Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, JAPAN; e-mail zwgoto@mse.nitech.ac.jp. Key words: HgxBa2Ca2Cu3Re0.2Oy filament, F-doping, solution spinning, transport Jc.
Tomoko Goto and Hideki Torii, "Preparation of Long Y123 Superconducting Filament by Solution Spinning." To be published in the proc. of the Int. Conf. on Physics and Chemistry of Molecular and Oxide Supercond. (MOS'96), Karlsruhe, Germany, Aug. 2-6, 1996. Department of Materials Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, JAPAN; e-mail zwgoto@mse.nitech.ac.jp. 74.72.Bk; 74.60.Jg; 74.80.Bj.
Tomoko Goto, Kazuo Watanabe, and Satoshi Awaji, "Field Dependence of Jc for F-Doped Hg1223 Filament." To be published in Jpn. J. Appl. Phys., Vol. 35 (1996). Department of Materials Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, JAPAN; e-mail zwgoto@mse.nitech.ac.jp. Key words: F-doping, Hg-1223 filament, transport Jc, field dependence, effective pinning.
F. J. Gotor, J. Ayache, N. Pellerin, and P. Odier, "Chemical Analysis in YBa2Cu3O7-x Melt-Textured Samples." To be published in J. Mater. Res. Contact P. Odier, Centre de Recherches sur la Physique des Hautes Temperatures - CNRS, 1D Avenue de la Recherche Scientifique, F-45071 Orleans Cedex 2, FRANCE; telephone +33 2 38 51 55 25; telefax +33 2 38 63 81 03; e-mail odier@cnrs-orleans.fr.
A. Goyal, D. P. Norton, M. Paranthaman, J. D. Budai, E. D. Specht, D. K. Christen, D. M. Kroeger, Q. He, B. Saffian, F. A. List, D. F. Lee, C. E. Klabunde, and P. M. Martin, "Fabrication of High Critical Current Density Superconducting Tapes by Epitaxial Deposition of YBCO Thick Films on Biaxially Textured Metal Substrates." To be published in the Proc. of the 9th Int. Symposium on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996. Metals and Ceramics Division, Oak Ridge National Laboratory, P.O. Box 2008, MS 6116, Oak Ridge, TN 37831; telephone (615) 574-1587; telefax (615) 574-7659; e-mail zag@ornl.gov.
N. M. Hamdan, Kh. A. Zig, and A. S. Al-Harthi, "Effect of Fluorine on the Critical Current Density of Thallium Based High Tc Superconductors." Presented at the Int. Conf. on Physics and Chemistry of Molecular and Oxide Supercond. (MOS'96), Karlsruhe, Germany, Aug. 2-6, 1996; to be published in J. Low Temp. Phys. Department of Physics 5047, King Fahd University of Petroleum and Minerals, Dhahran 31261, SAUDIA ARABIA; telephone +966 3 860 0000; telefax +966 3 860 2293; e-mail nmhamdan@dpc.kfupm.edu.sa.
J. M. Harris, Z.-X. Shen, P. J. White, D. S. Marshall, M. C. Schabel, J. N. Eckstein, and I. Bozovic, "Anomalous Superconducting State Gap Size vs. Tc Behavior in Underdoped Bi2Sr2Ca1-xDyxCu2O8+d." To be published in Phys. Rev. B. Department of Applied Physics and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, CA 94305-4045; email jharris@ee.stanford.edu; preprint also available at condmat@xxx.lanl.gov (9611010). 74.25.-q; 74.25.Jb; 74.72.Hs; 79.60.Bm.
Chia-Ren Hu, "Origin of the Zero-Bias (Tunneling-)Conductance Peaks (ZBCPs) Observed Ubiquitously in High-Tc Superconductors." Preprint #96:121; submitted to Phys. Rev. B. Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5932; telephone (713) 743-8200; telefax (713) 743-8201; e-mail preprints@www.tcs.uh.edu. 74.50.+r; 74.72.-h; 74.80.-g; 74.80.Fp.
T. Ishibashi and O. Yoda, "Structural Defects in Bi2Sr2Can-1CunO2n+4 (n=2,3) Superconductors Induced by 3 MeV Electron Irradiation." To be published in Physica C (in press). Department of Applied Physics, Hokkaido University, Sapporo 060, JAPAN. Key words: high-Tc superconductor, electron irradiation, x-ray line broadening analysis.
Yutaka Itoh, Takato Machi, Atsushi Fukuoka, Keiichi Tanabe, and Hiroshi Yasuoka, "Pseudo Spin-Gap in Single-Layer High-Tc Cu Oxide HgBa2CuO4+d." Report #ISSN 0082-4798; submitted to J. Phys. Soc. Jpn. Institute for Solid State Physics, University of Tokyo, 7-22-1 Roppongi, Minato-ku, Tokyo 106, JAPAN. Key words: HgBa2CuO4+d, high-Tc superconductor, NMR, pseudo spin gap.
Yutaka Itoh, Masahiro Matsumura, and Hideki Yamagata, "Anomalous Spin Dynamics in La2-xSrxCuO4 (x=0.13 and 0.18) Studied by [63]^Cu Nuclear Spin-Lattice Relaxation." Report #ISSN 0082-4798; submitted to J. Phys. Soc. Jpn. Institute for Solid State Physics, University of Tokyo, 7-221 Roppongi, Minato-ku, Tokyo 106, JAPAN. Key words: La2-xSrxCuO4, high-Tc superconductor, NMR, pseudo spin gap.
David R. Jackson, Stuart A. Long, Jeffery T. Williams, and Vickie B. Davis, "CAD of Rectangular Microstrip Antennas." Preprint #96:118; to be published as a chapter in Advances in Microstrip and Printed Antennas, edited by K. F. Lee (John Wiley, New York, 1997). Texas Center for Superconductivity, University of Houston, Houston, TX 772045932; telephone (713) 743-8200; telefax (713) 743-8201; e-mail preprints@www.tcs.uh.edu.
Q. X. Jia, D. Reagor, X. D. Wu, C. Mombourquette, and S. R. Foltyn, "Characterization of Ramp Edge-Geometry Ag:YBa2Cu3O7-x/PrBa2Cu3O7x/Ag:YBa2Cu3O7-x Junctions and dc SQUIDS." Preprint #LA-UR-96-3184; presented at the Appl. Supercond. Conf. (ASC'96), Pittsburgh, PA, Aug. 25-30, 1996; to be published in IEEE Trans. Appl. Supercond. Superconductivity Technology Center, G755, Los Alamos National Laboratory, Los Alamos, NM 87545, telephone (505) 667-2716; telefax (505) 665-3164; e-mail qxjia@lanl.gov.
M. R. Koblischka, L. Pust, A. Galkin, and P. Nalevka, "Anomalous Position of the Maximum in Magnetic Hysteresis Loops Measured on (Bi,Pb)-2223/Ag Tapes." Submitted to Appl. Phys. Lett. Contact L. Pust, Institute of Physics, Academy of Sciences of the Czech Republic, Na Sovance 2, CZ-18040 Praha 8, CZECH REPUBLIC; telephone +42 2 6605 2617; telefax +42 2 82 1227; e-mail pust@fzu.cz. 74.60.Ec; 74.60.Ge; 74.60.Jg.
K. Kumagai, S. Ikeda, J. Roos, M. Mali, and D. Brinkmann, "[195]^Pt and [11]^B NMR Studies of LaPt2B2C and YNi2B2C." To be published in Physica C (in press). Department of Physics, Graduate School of Science, Hokkaido University, Sapporo 060, JAPAN; telefax +81 11 717 9304. Key words: NMR, Knight shift, nuclear spin-lattice relaxation time, high-Tc superconductivity, density of states (DOS), YNi2B2C, LaPt2B2C.
G. Le Bras, L. Fruchter, V. Vulcanescu, V. Viallet, A. Bertinotti, A. Forget, J. Hammann, J.-F. Marucco, and D. Colson, "Superconducting Properties and Anisotropy of a HgBa2CuO4+d Single Crystal." To be published in Physica C (in press). Service de Physique de l'Etat Condense, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, FRANCE. Key words: anisotropic superconductor, magnetization, penetration depth, upper critical field H_[c2].
M. W. Lee, M. F. Tai, and J. B. Shi, "Scaling Law for Vortex Dynamics in Rb3C60 Superconductor." To be published in Physica C (in press). Department of Physics, National Chung Hsing University, Taichung, 402 Taiwan, REPUBLIC OF CHINA; telefax +886 4286 2534; e-mail mwl@phys.nchu.edu.tw.
Qiang Li, Y. N. Tsay, Y. Zhu, M. Suenaga, G. D. Gu, and N. Koshizuka, "Large Tc Depression at Low Angle [100] Tilt Grain Boundaries in Bulk Bi2Sr2CaCu2O8+d Bicrystals." Department of Applied Sciences, Brookhaven National Laboratory, Upton, NY 11973.
J. Lopez, P. Mune, S. Garcia, and E. Altshuler, "Possible Interpretation on the Existence of an Anomalous Inversion of Some ZFC and FC Transport Characteristics in YBCO and BSCCO Ceramic Superconductors." To be published in Physica C (in press). Superconductivity Laboratory, IMRE, Faculty of Physics, University of Havana, 10400 Havana, CUBA; E. Altshuler's e-mail altshul@tinored.cu. Key words: transport characteristics, ZFC and FC conditions, YBCO and BSCCO 2223 ceramics, internal magnetic fields.
Jing Lu and Liyuan Zhang, "Numerical Application of the Recursion Method to the Electronic Structure of C60." To be published in Mod. Phys. Lett. B. Contact Liyuan Zhang, Department of Physics, Peking University, Beijing 100871, CHINA; telephone +86 10 62752369. 31.90.+s.
Milan Majoros, "Hysteretic Losses at a Gap in a Thin Sheet of Hard Superconductor Carrying Alternating Transport Current." To be published in Physica C (in press). Institute of Electrical Engineering, Slovak Academy of Sciences, Bratislava, SLOVAKIA; telefax +42 7 375816; e-mail elecmajo@savba.sk. Key words: superconductor, ac losses, cables.
Ross H. McKenzie and David Scarratt, "Non-Fermi-Liquid Behavior Due to Short Range Order." To be published in Phys. Rev. B. School of Physics, University of New South Wales, Sydney 2052, AUSTRALIA. 71.10.Hf; 71.10.Pm; 79.60.-i; 71.45.Lr.
Maria Luisa Medarde, "Structural, Magnetic and Electronic Properties of RNiO3 Perovskites (R=Rare Earth)." To be published in J. Phys. Cond. Mat. Laboratory for Neutron Scattering, Eidgenoessische Technische Hochschule Zurich, CH-5232 Villigen PSI, SWITZERLAND.
E. Z. Meilikhov, "Modified Dislocation Model of Intergrain Tilt Boundaries in HTSC." To be published in Physica C (in press). Russian Research Center "Kurchatov Institute", 123182 Moscow, RUSSIA; +7 95 196 7684; e-mail meilikho@supercond.msk.su.
C. Meingast, A. Junod, and E. Walker, "Superconducting Fluctuations and Uniaxial-Pressure Dependence of Tc of a Bi2Sr2CaCu2O8+x Single Crystal from High-Resolution Thermal Expansion." To be published in Physica C (in press). Forschungszentrum Karlsruhe, Institut fuer Nukleare Festkoerperphysik, P.O. Box 3640, D-76021 Karlsruhe, GERMANY; telefax +49 7247 82 4624; e-mail meinga@infp.kfk.de. 65.70.+y; 74.72.Hs; 74.62.Fj; 74.40.+k.
Koichi Mizuno, Hideaki Adachi, and Kentaro Setsune, "In situ Preparation of Superconducting HgBa2CuO4 Thin Films." To be published in J. Low Temp. Phys. Central Research Laboratories, Matsushita Electric Industrial Co., Ltd., 3-4 Hikaridai, Seika, Soraku, Kyoto 619-02, JAPAN; telephone +81 774 98 2514; telefax +81 774 98 2585. 74.76.Bz; 74.72.-h.
T. Nagashima, S. Harada, M. Hangyo, S. Nakashima, M. Mukaida, and S. Miyazawa, "Inter-Plane Electromagnetic Response of a-axis Oriented YBCO Films in the Millimeter-Wave Region." To be published in Physica C (in press). Contact S. Nakashima, Department of Applied Physics, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565, JAPAN; telefax +81 6 879-7856; e-mail nakashim@ap.eng.osaka-u.ac.jp. Key words: interplane complex conductivity, millimeter wave, London penetration depth, YBa2Cu3O7-d, thin films. 74.25.Nf; 74.25.Gz; 74.72.Bk.
S. Nhien and G. Desgardin, "Synthesis and Formation of the High-Tc 2223 Phase in the (Bi,Pb)-Sr-Ca-Cu-O System." To be published in Physica C (in press). Laboratoire CRISMAT, CNRS, URA 1318, ISMRA/Universite de Caen, Boulevard du Marechal Juin, F-14050 Caen Cedex, FRANCE; telefax +33 31 951 600. Key words: scanning electron microscopy, synthesis of Bi-2223, mechanism of transformation. 61.16.Bg; 06.60.Ei.
Akihiko Nishida, Chihiro Taka, and Kazumi Horai, "Field Inhomogeneity at the Surface of YBa2Cu3O7-d and ESR Anomalies." Presented at the 9th Int. Symp. on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996. Department of Applied Physics, Faculty of Science, Fukuoka University, Fukuoka 814-80, JAPAN. Key words: YBa2Cu3O7-d superconductor, single and polycrystalline, sample inhomogeneity, local field distribution, ESR anomaly.
Akihiro Odagawa, Masahiro Sakai, Hideaki Adachi, Kentaro Setsune, Tetsuji Hirao, and Kunio Yoshida, "Fabrication and Characterization of Intrinsic Josephson Junctions for (Bi,Pb)SrCaCuO Thin Films." Presented at the 9th Int. Symp. on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996. Central Research Laboratories, Matsushita Electric Industrial Co., Ltd., 3-4 Hikaridai, Seika, Soraku, Kyoto, 619-02, JAPAN; telephone +81 774 98 2514; telefax +81 774 98 2585. Key words: intrinsic Josephson junction, (Bi,Pb)2Sr2Ca2Cu3Ox superconductor, thin film.
A. Ono and M. Tsutsumi, "Composition Dependence of the Critical Temperature in Superconducting Ga-1212 GaSr2Tm1-xCaxCu2O7." To be published in Physica C (in press). National Institute for Research in Inorganic Materials, 1-1 Namiki, Tsukuba 305, JAPAN; telefax +81 298 52 7449; e-mail ono@nirim.go.jp.
Xavier Oudet, "Interatomic Distances in Barium Copper Based Superconductors." Presented at Solid State Chem. '96, Bratislava, Slovak Republic, July 6-12, 1996; to be published in Chemical Paper 1997. Laboratoire de Magnetisme et d'Optique de l'Universite de Versailles, Batiment Fermat, C.N.R.S., 45 Avenue des Etats-Unis, F-78035 Versailles Cedex, FRANCE; telephone +33 1 39 25 46-50 or -51; telefax +33 1 39 25 46 52.
V. M. Pan, V. F. Solovjov, A. L. Kasatkin, V. L. Svetchnikov, H. C. Freyhardt, and H. W. Zandbergen, "Abrikosov Vortices Behavior in Different Pinning Potential for Moderately Anisotropic High-Tc Superconductors." Presented at the NATO Adv. Res. Workshop on Phys. and Mater. Sci. of High Temp. Supercond. IV, High Tatry Mountains, Slovak Republic, July 21-27, 1996; to be published in NATO Series, edited by R. Kossowsky (Kluwer Academic Publ., The Netherlands). Institute for Metal Physics, National Academy of Sciences, Vernadsky Blvd., 36 Kiev 252142, UKRAINE; telefax +380 44 444 1031; e-mail pan@d0gimp.kiev.ua.
M. Paranthaman, K. A. David, and T. B. Lindemer, "Phase Equilibria of the MgO-Cu2O-CuO System." To be published in Mater. Res. Bull.. Chemical and Analytical Sciences Division, Building 4500 South, MS 6100, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6100; telephone (423) 574-5045; telefax (423) 574-4939; e-mail p11@ornl.gov.
M. Paranthaman, A. Goyal, D. P. Norton, F. A. List, E. D. Specht, D. K. Christen, D. M. Kroeger, J. D. Budai, Q. He, B. Saffian, D. F. Lee, and P. M. Martin, "Development of Biaxially Textured Buffer Layers on Rolled-Ni Substrates for High Current YBa2Cu3O7-y Coated Conductors." Presented at the 9th Int. Symposium on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996. Chemical and Analytical Sciences Division, Building 4500 South, MS 6100, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6100; telephone (423) 574-5045; telefax (423) 5744939; e-mail p11@ornl.gov. Key words: buffer layers, biaxial texture, rolled-Ni substrates, YBCO coated conductors, high-temperature and highfield applications.
M. Paranthaman, F. A. List, A. Goyal, E. D. Specht, C. E. Vallet, D. M. Kroeger, and D. K. Christen, "Growth of TlBa2Ca2Cu3O9-y Superconducting Films with Local Biaxial Alignment Extending Up to 5 mm on Ag Substrates Using a Spray Pyrolysis Technique." To be published in J. Mater. Res. Chemical and Analytical Sciences Division, Oak Ridge National Laboratory, Building 4500 South, MS 6100, Oak Ridge, TN 37831-6100; telephone (423) 574-5045; telefax (423) 574-4939; e-mail p11@ornl.gov.
N. Pellerin, P. Simon, P. Odier, F. J. Gotor, N. J. Poirot, L. Vutien, L. Durand, and I. Monot, "Secondary-Phase Orientation Probed by EPR: Y2BaCuO5 in YBa2Cu3O7-x." To be published in Phys. Rev. B, Jan., 1997. Centre de Recherches sur la Physique des Hautes Temperatures, Centre National de la Recherche Scientifique, F-45071 Orleans Cedex 2, FRANCE; P. Odier's telephone +33 38 51 55 25; telefax +33 38 63 81 03; e-mail odier@cnrs-orleans.fr. 74.90.+n; 76.30.Da; 74.72.Bk; 74.72.Yg.
D. Pelloquin, V. Hardy, A. Maignan, and B. Raveau, "Single Crystals of the 96 K Superconductor (Hg,Cu)Ba2CuO4+d: Growth, Structure and Magnetism." To be published in Physica C. Laboratoire CRISMAT, CNRS, URA 1318, ISMRA/Universite de Caen, Boulevard du Marechal Juin, F-14050 Caen Cedex, FRANCE; telefax +33 2 31 95 16 00; e-mail pelloqui@criris1.ismra.fr.
N. M. Plakida, "Optical Conductivity in the Hubbard Model." Preprint #E17-96-110; submitted to J. Phys. Soc. Jpn. Joint Institute for Nuclear Research, Dubna H.P.O. Box 79, 101000 Moscow, RUSSIA.
A. Polyanskii, A. Pashitski, A. Gurevich, J. A. Parrell, M. Polak, D. C. Larbalestier, S. R. Foltyn, and P. N. Arendt, "Magneto-Optical Imaging and Current Distributions in High-Tc Superconductors." Presented at the 9th Int. Symp. on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996. Applied Superconductivity Center, University of Wisconsin, Madison, WI 53706. Key words: magneto-optical imaging, current distributions, percolation, structural defects, HTS.
P. Prelovsek, "Electron Green's Function in the Planar t-J Model." Submitted to Z. Phys. J. Stefan Institute, University of Ljubljana, 1001 Ljubljana, SLOVENIA. 71.27.+a; 79.60.-i; 71.20.-b.
P. Prelovsek, "Hall Effect of Charge Carriers in a Correlated System." Submitted to Phys. Rev. Lett. J. Stefan Institute, University of Ljubljana, 1001 Ljubljana, SLOVENIA. 71.27.+a; 75.40.Cx; 71.10.+x.
P. Pureur and R. Menegotto Costa, "Low-Field Fluctuation Magnetoconductivity in Bi2Sr2CaCu2O8 and YBa2Cu3O7: Gaussian, Critical and LLL Scalings." To be published in the Proc. of the Adriatico Res. Conf. and NATO Adv. Res. Workshop on Fluctuation Phenomena in HTSC, Trieste, Italy, Aug. 5-8, 1996. Instituto de Fisica, Universidade Federal do Rio Grande do Sul, P.O. Box 15051, 91501-970 Porto Alegre, BRAZIL; telefax +55 51 336 1762; e-mail ppureur@if.ufrgs.br.
M. J. Qin and X. X. Yao, "ac Response of High Temperature Superconductors in the Flux Creep Region." To be published in Physica C (in press). Department of Physics and National Laboratory of Solid State Microstructures, Center for Advanced Studies in Science and Technology of Microstructures, Nanjing University, Nanjing 210093, PEOPLE'S REPUBLIC OF CHINA. 74.60.Ge; 74.72.Fq.
I. Sargankova, W. Koenig, M. Mair, G. Gritzner, P. Diko, V. Kavecansky, J. Kovac, and S. Longauer, "Influence of the Variation of the Hg and Pb Stoichiometry on the Microstructure and Tc of HgxPbyBa2Ca2Cu3O8+d." Presented at the 5th World Congress on Supercond., Budapest, Hungary, July 7-11, 1996; to be published in Superlatt. and Microstruc. Institute of Experimental Physics, Slovak Academy of Science, Watsonova 47, 043 53 Kosice, SLOVAK REPUBLIC; e-mail sarganek@linux1.iepsaske.sk or sarganek@rs530h.iepsaske.sk.
S. Sasaki, A. Matsuda, and C. W. Chu, "Antiferromagnetically Enhanced [13]^C Spin-Lattice Relaxation in K3C60 --No Evidence of Electronic Multi-Sites." Preprint #96:122; to be published in J. Phys. Soc. Jpn. Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5932; telephone (713) 743-8200; telefax (713) 743-8201; e-mail preprints @www.tcs.uh.edu. Key words: [13]^C NMR, spin-lattice relaxation, K3C60, antisotropy, hyperfine coupling, single site, extended Korringa relation, antiferromagnetic interaction, random phase approximation.
H. Sato, H. Yamamoto, and M. Naito, "Growth of (001) La1.85Sr0.15CuO4 Ultrathin Films Without Buffer or Cap Layers." To be published in Physica C. NTT Basic Research Laboratories, 3-1 Morinosato Wakamiya, Atsugi-shi, 243-01 Kanagawa, JAPAN; telephone +81 462 40 3532; telefax +81 462 70 2364; e-mail hisashi@will.brl.ntt.jp. Key words: La2xSrxCuO4, thin films, ultrathin films.
Hisashi Sato, Hideki Yamamoto, and Michio Naito, "La2-xSrxCuO4 Thin Films Grown by Reactive Coevaporation." To be published in Adv. in Supercond. IX: Proc. of the 9th Intl. Symposium on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996. NTT Basic Research Laboratories, 3-1 Morinosato Wakamiya, Atsugi-shi, 243-01 Kanagawa, JAPAN; telephone +81 462 40 3532; telefax +81 462 70 2364; e-mail hisashi@will.brl.ntt.jp. Key words: La2-xSrxCuO4, thin films, reactive coevaporation, strain effect, ultrathin films.
J. A. Sauls and D. Rainer, "Unconventional Pairing in Heavy Fermion Metals." Presented at the XXI Int. Conf. on Low Temp. Phys. (LT21), Prague, Czech Republic, Aug. 8-14, 1996; to be published in Czech. J. Phys., Vol. 46 (1996). Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208.
G. J. Schmitz and O. Kugeler, "Isothermal Production of Uniaxially Textured YBCO Superconductors Using Constitutional Gradients." Submitted to Physica C. ACCESS e.V., Intzestrasse 5, D-52072 Aachen, GERMANY; telephone +49 241 806 721; telefax +49 241 38578; e-mail gjs@gi.rwth-aachen.de.
C.-H. Shim, W. S. Yang, and Jung Ho Je, "Effect of a Shield on the Formation of the Superconducting Phases in the Bi-Sr-Ca-Cu-O Film Deposited by Off-Axis Sputtering." To be published in Physica C (in press). Contact Jung Ho Je, Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja Dong, Nam Ku, Pohang, 790-784, SOUTH KOREA; telefax +82 562 279 2399; email jhje@vision.postech.ac.kr. Key words: Bi-Sr-Ca-Cu-O, superconductors, thin film, phase transformation.
V. F. Solovjov and V. M. Pan, "The Flux Line Lattice States in SingleCrystalline Superconductors with Weak Pinning." Presented at the NATO Adv. Res. Workshop on Phys. and Mater. Sci. of High Temp. Supercond. IV, High Tatry Mountains, Slovak Republic, July 21-27, 1996; to be published in NATO Series, edited by R. Kossowsky (Kluwer Academic Publ., The Netherlands). Institute for Metal Physics, National Academy of Sciences, 36 Vernadsky Blvd., 252142 Kiev, UKRAINE; telefax +380 44 444 1031; e-mail pan@d0gimp.kiev.ua.
Hongqing Song, Guanghan Cao, Yuhang Ren, Zhu'an Xu, and Qirui Zhang, "Relationships Between the Structural Properties and the Superconductivity in Y0.4Pr0.6Ba2-xSrxCu3O7-d (x=0,1.0)." Submitted to Z. Phys. B. Department of Physics, Zhejiang University, Hangzhou 310027, PEOPLE'S REPUBLIC OF CHINA. Key words: superconductivity, crystal structure, x-ray diffraction. 61.10.My; 74.62.Bf; 74.72.Bk.
Ming Fong Tai, Chien Min Sung, Ming Way Lee, and Jen-Bin Shi, "The Trend of Magnetic Irreversibility for Rb3C60 and Its Implications." To be published in Physica C (in press). Department of Physics, National Chung-Cheng University, Chia-Yi, Taiwan, REPUBLIC OF CHINA; telefax +886 5 272 0578.
Menachem Tsindlekht, Michael Golosovsky, Dan Davidov, and Arne F. Jacob, "Nonlinear Surface Impedance of Y-Ba-Cu-O Films in a dc Magnetic Field." Presented at the Appl. Supercond. Conf. (ASC'96), Pittsburgh, PA, Aug. 25-30, 1996; submitted to IEEE Appl. Supercond. Hebrew University of Jerusalem, Racah Institute of Physics, Jerusalem 91904, ISRAEL; Michael Golosovsky's telephone +972 2 658-6338 or -5139; telefax +972 2 5617 805; e-mail golos@vms.huji.ac.il.
I. Van Driessche, A. Buekenhoudt, K. Konstantinov, E. Bruneel, and S. Hoste, "Evaluation of the Phase Composition of BPSCCO Bulk Samples by XRD- and Susceptibility Analysis." To be published in Appl. Supercond. Division of Superconducting Materials, Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281, B-9000 Ghent, BELGIUM. Key words: superconductivity, ac-susceptibility, XRD, shielding effects.
V. A. Vas'ko, V. A. Larkin, P. A. Kraus, K. R. Nikolaev, D. E. Grupp, C. A. Nordman, and A. M. Goldman, "Critical Current Suppression in a Superconductor by Injection of Spin-Polarized Carriers from a Ferromagnet." School of Physics and Astronomy, Institute of Technology, Tate Laboratory of Physics, University of Minnesota, 116 Church Street S.E., Minneapolis, MN 55455. 74.80.Dm; 74.50.+r; 74.76.Bz.
N. V. Vo, H. K. Liu, S. X. Dou, and E. W. Collings, "Dependence of Mechanical and Electrical Properties of Multifilamentary Bi(Pb)-2223/Ag Tapes Prepared by Methods of OPIT and CTFF on Fill Factor and Filament Distribution." To be published in the Proc. of the Second Int. Mtg. of Pacific Rim Ceramic Soc. on High-Temp. Supercond. (PACRIM II), Cairns, Australia, July 15-17, 1996. Center for Superconducting and Electronic Materials, Institute of Materials Technology and Manufacturing, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, AUSTRALIA; e-mail nvv01@uow.edu.au.
Nghia Van Vo, Hua Kun Liu, and Shi Xue Dou, "Issues Involving the Processing and Fabrication of Bi(Pb)-2223/Ag Composite Tapes for Coil and Magnet Applications." Presented at the Appl. Supercond. Conf. (ASC'96), Pittsburgh, PA, Aug. 25-30, 1996; to be published in IEEE Trans. Appl. Supercond. Center for Superconducting and Electronic Materials, Institute of Materials Technology and Manufacturing, University of Wollongong, Northfields Ave., Wollongong, NSW 2522, AUSTRALIA; e-mail nvvo1@uow.edu.au.
WEI Lehan, KANG Yuzhuan, ZHU Xunzhi, and SHEN Zhongzhe, "Preparation of YBa2Cu3O7-x Wires by Silver Paste Coating--Electrophoresis Technique." To be published in Cryo. and Supercond. Experimental Center, Shanghai Normal University, Guilin Road 100, Shanghai 200234, PEOPLE'S REPUBLIC OF CHINA.
Roy Weinstein, Ravi-Persad Sawh, and Yanru Ren, "New Chemical Pinning Center." Presented at the 9th Int. Symposium on Supercond. (ISS'96), Sapporo, Japan, Oct. 21-24, 1996. Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX 772045932; telephone (713) 743-8200; telefax (713) 743-8201; e-mail preprints@www.tcs.uh.edu. Key words: chemical pinning centers, high Jc, melt-textured YBCO.
Roy Weinstein, Ravi-Persad Sawh, Yanru Ren, and Jianxiong Liu, "Isotropic Short Columnar Pinning Centers." Presented at the 9th Int. Symposium on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996. Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5932; telephone (713) 743-8200; telefax (713) 743-8201; e-mail preprints@www.tcs.uh.edu. Key words: pinning centers, trapped field magnet, high Jc, fission fragments.
J. C. Wolfe, S. V. Pendharkar, P. Ruchhoeft, S. Sen, M. D. Morgan, W. E. Horne, R. C. Tiberio, and J. N. Randall, "A Proximity Ion Beam Lithography Process for High Density Nanostructures." Preprint #96:124; to be published in J. Vac. Sci. Technol. Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5932; telephone (713) 743-8200; telefax (713) 743-8201; e-mail preprints@www.tcs.uh.edu.
W. Wong-Ng, F. Jiang, and L. P. Cook, "Subsolidus Phase Relationships of the Pb-Sr-Ca-O System at 840^oC to 850^oC in Air." To be published in Physica C (in press). Ceramics Division, National Institute of Standards and Technology, Giathersburg, MD 20899; telefax (301) 9752125; e-mail wongng@tiber.nist.gov.
Shiming Wu, Bartek A. Glowacki, Wei Yao Liang, Xiao-Ming Yang, and Harald W. Weber, "Improvement of Critical Current Density and Microstructure of TI-1223 Tapes by a Two-Powder Method." Presented at the Appl. Supercond. Conf. (ASC'96), Pittsburgh, PA, Aug. 25-30, 1996; to be published in IEEE Trans. Applied Supercond. Interdisciplinary Research Centre in Superconductivty, University of Cambridge, Madingley Road, Cambridge CB3 OHE, UNITED KINGDOM; telephone +44 1223 337443; telefax +44 1223 337074; e-mail sw204@cus.cam.ac.uk.
X. S. Wu, S. S. Jiang, F. M. Pan, J. Lin, N. Xu, Mao Zhiqiang, Xu Gaoji, and Zhang Yuheng, "Microstructures of La1.85Sr0.15CuO4 Doped with Ni at High Doping Level." To be published in Physica C (in press). National Laboratory of Solid State Microstructures, and Center for Advanced Studies in Science and Technology of Microstructures, Nanjing University, Nanjing 210093, PEOPLE'S REPUBLIC OF CHINA.
XU Gaojie, MAO Zhiqiang, TIAN Mingliang, and ZHANG Yuheng, "Study of the Microstructure and Normal-State Transport Properties in the Bi1.9Sr1.6La0.4CuOy System." To be published in Physica C (in press). Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, CHINA. Key words: Bi-Sr-La-Cu-O, superconductivity, modulation structure, spin gap.
Z. A. Xu, X. J. Zhang, Z. K. Jiao, and Q. R. Zhang, "Synthesis and Superconductivity of a New Type of 1212 Phase Cuprates (B,Cd)(Sr,Ba)2YCu2Oy." To be published in Mater. Lett. Department of Physics, Zhejiang University, Hangzhou 310027, PEOPLE'S REPUBLIC OF CHINA. Key words: (B,Cd)-1212 phase, high-Tc superconducting oxide. 74.10.+v.
M. Yeadon, M. Aindow, F. Wellhoefer, and J. S. Abell, "Topographical Development and Misfit Relief in Laser-Ablated Heteroepitaxial YBa2Cu3O7-d Thin Films." To be published in J. Cryst. Growth. Contact M. Aindow, School of Metallurgy and Materials, University of Birmingham, Elms Road, Edgbaston, Birmingham B15 2TT, UNITED KINGDOM; telephone +44 121 414 5188; telefax +44 121 414 5232; e-mail m.aindow@bham.ac.uk.
Monica Zamboni, Sang Im Yoo, Koichiro Waki, Takamitsu Higuchi, Satoru Koishikawa, Naomichi Sakai, and Masato Murakami, "Direct Observation of Anisotropic Flux Penetration in OCMG Processed NdBCO Bulk Superconductors Using the Magneto-Optical Faraday Effect." Presented at the the Proc. of the 9th Int. Symposium on Supercond. (ISS'96), Sapporo, Hokkaido, Japan, Oct. 21-24, 1996; to be published in Adv. Supercond. IX (Springer-Verlag, Tokyo, 1996). Superconductivity Research Laboratory, International Superconductivity Technology Center, 1-16-25 Shibaura, Minato-ku, Tokyo 105, JAPAN; telephone +81 3 3454 9284; telefax +81 3 3454 9287. Key words: iron garnet films, Nd-Ba-Cu-O, anisotropy, OCMG process, flux gradient.
Z. Y. Zeng, Y. Yu, A. M. Sun, X. N. Xu, S. Y. Ding, and X. X. Yao, "Frequency Dependence of ac Magnetic Response in Type-II Superconductors." To be published in Physica C (in press). Department of Physics and Solid State Physics Institute, Nanjing University, Nanjing, 210093, PEOPLE'S REPUBLIC OF CHINA.
*Jan. 12 - 17, 1997: Gordon Research Conference on Superconductivity, Colony Harbor Hotel, Ventura, CA. Topics include: basic theory, vortices, materials, photoemission, optical properties, d-wave and swave superconductivity, normal-state properties, charge and flux quantization, stripe phases, tunneling, and nickel borides. For information, contact D. K. Finnemore, Ames Laboratory-USDOE and Department of Physics, Iowa State University, Ames, IA 50011-3160; telephone (515) 294 3455; telefax (515) 294-0689; e-mail finnemore@ameslab.gov.
Jan. 13 - 31, 1997: Tenth Physics Summer School: Physics of Novel Materials, The Australian National University, Canberra, Australia. Intended for postgraduate students and research workers interested in the physics of materials. Topics (tentative) include metal-insulator transition and oxides, nanomaterials, fullerenes and other nanostructures, old and new superconductors, low-dimensional disordered systems, zeolites, polymers, spin glasses, transport on novel materials, semiconductor nanostructures, carbon allotropes, thin-film semiconductors, and non-equilibrium properties by ion irradiation. For information, contact M. P. Das, Convenor, National Center for Theoretical Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia; telephone +61 6 249 3066; telefax +61 6 249 4676; e-mail martina.landsmann@anu.edu.au.
*Feb. 28 - March 4, 1997: Fifth International Conference on Materials and Mechanisms of Superconductivity and High-Temperature Superconductors (M2S-HTSC-V), Beijing, China. Two plenary sessions, 30-33 microsymposia and oral sessions (three or four parallel sessions, at least two sessions to be reserved for latest new results and outstanding postdeadline contributions), three tutorial sessions, and poster sessions. Topics include high-Tc materials; physical properties of high-Tc materials; magnetism and superconductivity; vortices, pinning, and flux melting; thin films and multilayers; Josephson junctions; applications; heavy fermions; organic superconductors; fullerenes; and theory. Exhibition of high-Tc superconducting materials, low-temperature experimental appliances, and cryogenic engineering and refrigeration instruments. Conference language is English. Abstract and manuscript deadline, January 31, 1997.** For information, contact D. Jin, M2S-HTSCV Secretariat, Cryogenic Laboratory, Chinese Academy of Sciences, P.O. Box 2711, Beijing 100 080, People's Republic of China; telephone +86 10 255 1143; telefax +86 10 256 4049; e-mail djin@cl.cryo.ac.cn; Web site http://sun1.bham.ac.uk/hey/conferences/. **Note revised abstract deadline.
April 7 - 9, 1997: Fourth HTS Workshop on High Frequency Applications of Thin Films, Fabrication, Passive and Active Devices, Oxford, United Kingdom. Follows previous three successful HTS Workshops held at the University of Twente in 1994, 1995, and 1996. Five sessions comprising the Workshop will cover: 1) the deposition of thin films of HTS; 2) the microwave properties of HTS; 3) the design, fabrication, and performance of HTS passive microwave devices; 4) the fabrication of Josephson junctions in HTS; and 5) the applications of HTS Josephson devices. Oral and poster contributions are solicited; proceedings to be published. Further details available from D. Dew-Hughes, A. P. Jenkins, or C.R.M. Grovenor, Department of Engineering Science, telefax +44 1865 273010 or -273764; e-mail grovenor@materials.oxford.ac.uk; web site http://www.materials.ox.ac.uk/Materials/Conferences/hts4thinfilms.html. Registration can also be carried out via the Web page.
*May 25 - 29, 1997: 9th International Symposium on Intercalation Compounds (ISIC 9), Bordeaux-Arcachon, France. Will focus on basic concepts in the chemistry and physics of intercalation compounds. Contributions solicited in the following topics: new intercalation compounds and synthesis routes; thermodynamics, kinetics, and reaction mechanisms; structure and lattice dynamics; phase transitions; electronic properties, charge transfer, and band-structure calculations; transport properties; superconductivity; magnetic properties; electrochemical properties; intercalation electrodes for advanced batteries; and other present and potential applications. For further information, contact ISIC 9, Centre de Recherche Paul Pascal, Avenue Albert Schweitzer, F-33600 Pessac, France; telephone +33 5684 5632; telefax +33 5684 5600; e-mail mondolfi@crpp.u-bordeaux.fr.
June 8 - 13, 1997: 1997 IEEE MTT-S International Microwave Symposium, Denver, CO. Will focus on highly integrated ICs or subsystems that include RF functions at any frequency. Will include session on superconducting microwave and millimeter-wave circuits and systems. Papers are solicited. Abstract deadline, December 2, 1996. For further information, contact Vijay Nair, Technical Program Chair; telephone (602) 413-5922; telefax (602) 413-5934; e-mail v.nair@ieee.org. For latest information, see web page at http://www.ieee.org/mtt/mtt.html
June 15 - 18, 1997: Third Joint ISTEC/MRS International Workshop on Superconductivity: Suitable Materials and Processing for HTS Applications Towards the Next Decade, The Royal Waikoloan, Big Island, Hawaii. Will mainly be a single-session meeting with significant time allotted to encouraging the exchange of information among participants. Regular sessions titles are: processing of HTS bulk; processing of HTS wire, tapes, and thick films; crystal growth related to HTS processing of bulk and films; thin-film processing for rf applications; and fabrication and control of HTS junctions for digital circuits. Rump sessions: ac losses, vortex dynamics, and pinning; and SQUID and sensor applications. Invited and contributed oral presentations and posters. Abstract deadline, January 10, 1997. Contact Koji Kajimura, Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba, Ibaraki 305, Japan; telephone +81 298 54-5003; telefax +81 298 54-5070; e-mail kajimura@etl.go.jp or Eric Hellstrom, Department of Materials Science & Engineering, University of Wisconsin at Madison, Madison, WI 53706; telephone (608) 263-9462; telefax (608) 263-1087.
*July 27- Aug. 1, 1997: International Cryogenic Engineering Conference and the International Cryogenic Materials Conference (Joint ICMC-CEC 1997 Conference), Oregon Convention Center, Portland, OR. Intended for those interested in cryogenic applications of engineering and materials. Includes special focus on superconductivity (LTS and HTS). CEC focuses on science and engineering required for cryogenic applications. Examples of topics in past conferences include liquified gases for fuels; space applications of cryogenic liquids; cooling and performance of superconducting magnet systems in medical, transportation, power, and basic research applications; as well as the systems, machinery, control technology, and thermodynamics required to produce low temperatures. ICMC focuses on the development, characterization, fabrication, and optimization of the materials used in cryogenic applications. ICMC is typically broken into two broad categories: structural materials and superconducting materials. Covers both high- and low-temperature superconducting materials from basic materials research to behavior of composite cables and wires in applications. Cryo Expo will be held in conjunction with conference. Abstract deadline, December 15, 1996. For further information, contact Bill Warnes, Oregon State University, Mechanical Engineering Dept., Corvallis, OR 97331-6001; telephone (541) 737-7016; e-mail warnesw@engr.orst.edu; or Nancy Wilson, Exe-Me and Company, P.O. Box 25445, Portland, OR 97298-0445; telephone (503) 2922114; e-mail ewemeco@europa.com. Information also available at the web site http://www.orst.edu/groups/icmc97.
Information
New Book: Superconductivity: Theoretical and Experimental Effects, edited by K. N. Shrivastava. Proceedings of the Discussion Meeting on Superconductivity, University of Hyderabad, Oct. 10-12, 1994. Intended for graduate students and researchers in physics, chemistry, and engineering. Topics include: carbon superconductors, electric field effects, the isotope effect, symmetries in superconductors, coexistence of magnetic and superconducting order, low-temperature specific heat and related studies, and others. Publ. 1996; 327 pp.; price $87; ISBN 1 56072 360 2. Contact Nova Science Publishers, Inc., 6080 Jericho Turnpike - Suite 207, Commack, NY 11725; telephone (516) 499-3103; telefax (516) 499-3146; e-mail novasci1@aol.com.
New Volumes in Series: Studies of High Temperature Superconductors: Advances in Research and Applications, edited by Anant Narlikar. Volume 17: Microwave Studies of High Temperature Superconductors, includes the following topics: field-modulated microwave absorption; magnetic-fieldinduced microwave losses; microwave magnetoabsorption in hightemperature superconductors; dissipation in high-Tc superconductors in magnetic field; microwave surface resistance of high-Tc superconducting films and measurement techniques; and microwave penetration depth measurement in HTS materials. Publ. 1996; 262 pp.; price $89; ISBN 1 56072 360 7. Contact Nova Science Publishers, Inc., 6080 Jericho Turnpike - Suite 207, Commack, NY 11725; telephone (516) 499-3103; telefax (516) 499-3146; e-mail Novasci1@aol.com.
It is with sadness that we announce the death of Dr. Greame Sloggett on Oct. 28, 1996. Dr. Sloggett was the leader of the CSIRO Superconducting Sensors and Technology Project and was involved with the development of high Tc SQUIDs and magnetometers. In the past, he worked on the CSIRO LTS Biomagnetometry project. His greatest scientific contribution is his establishment and measurement of the absolute volt which is the value now used as the international standard. He will be greatly missed by his colleagues, friends, and family.
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High-Tc Update, Vol. 10, #23, December 1, 1996.