JOURNAL OF SUPERCONDUCTIVITY Volume 6, Number 1 February 1993 CONTENTS REVIEW ARTICLE Thin-Film Processing of High-7.. Superconductors C. H. Stoessel, R. F. Bunshah, S. Prakash, and H. R. Fetterman REGULAR ARTICLE Theoretical Study of Isotope Effect in La-Doped Y-123 P. C. W. Fung and W. Y. Kwok Fabrication of Bold Superconductors YBa,Cu,_,Te,O;_; with Highly Oriented Layer Structure Using the Melt-Texture Growth Process Z. L. Du, P. C. W. Fung, Z. H. He, G. H. Zhou, M. J. Li, Y. Lu, and J. X. Zhang Film Thickness Dependence of Critical Current Density for YBa,Cu,O, Films Post-Annealed at a Low Oxygen Partial Pressure A. Mogro-Campero and L. G. Turner On the Possibility of the Superconducting Phase Coherence through Time Barriers Antonio Barone and Igor O. Kulik Superconductivity in Nearly Single-Phase Bi-Pb—Sr—Ca—Cu-—O Samples with Different Nominal Compositions N. Balchev, S. Kovacheva, V. Lovchinov, K. Konstantinov, and K. Petrov Acid-Base Equilibrium—A Thermodynamic Study of Formation and Stability of the Bi-2223 Phase Xi Zhengping and Zhou Lian Effect of Processing History on the Properties of Ag-Based Tapes Xi Zhengping and Zhou Lian JOURNAL OF SUPERCONDUCTIVITY Volume 6, Number 2 April 1993 CONTENTS Stabilization of Toroidal Abrikosov Vortex in a Nonuniform Superconductor V. A. Kozlov and A. V. Samokhvalov Y,_, Pr, Ba,Cu,O,: Charge Redistribution Between Planes and Chains? D. Khomskii Relationship Between Superconductivity and Band Structures of Electrons and Phonons Shigeji Fujita and Seichi Watanabe Studies on Magnetization and Microwave Properties of Gamma-Ray-Irradiated Sm-—Ba—Cu—O Superconductors B. K. Roul Low-field Behavior of Critical Current in Sm, , -Ba,—Cu,, ,-O,_,; Ceramic Superconductor B. K. Roul Magnetic and Transport Critical Current Density of Laser-Irradiated Sm—Ba—Cu—O Superconductor at 4.2 K B. K. Roui Fullerene Superconductivity by Short-Range Order Instability A. Szasz Effect of Codoping Sb and V to the BiPbSrCaCuO System Youmo Li, Yanrong Li, J. P. Chaminade, P. Dordor, and E. Marquestaut Resistivity and Magnetic Susceptibility Studies of TI,,Ca,,_ ,Ba,Cu,,O, Before and After Doping With LiF A. A. El-Hamalawy, M. M. El-Ziadia, A. A. Amar, and M. M. Elkholy JOURNAL OF SUPERCONDUCTIVITY Volume 6, Number 3 June 1993 CONTENTS REVIEW High-Temperature Superconducting Microwave Devices: Fundamental Issues in Materials, Physics, and Engineering Nathan Newman and W. Gregory Lyons ARTICLES Intergranular Fluxons in High-7.. Superconductors R. Vaccarone Critical Current in YBCO Thin Film Bridge Studied Using Magneto-optic Technique M. V. Indenbom, A. Forkl, H. Kronmiiller, and H.-U. Habermeier Photoinduced Changes of Electrical Conductivity in Modified Y-Ba-Cu-O Thin Films N. Tuytuyndzhiev and S. Kanev Asymmetry between Flux Penetration and Flux Expulsion in Tl-2212 Superconductors M. Foldeaki, H. Ledbetter, M. Paranthaman, H. M. Duan, and A. M. Hermann Surface Resistance of Large-Area Tl,Ba,CaCu,O, Thin Films at Microwave and Millimeter Wave Frequencies Measured by Three Noncavity Techniques W. L. Holstein, L. A. Parisi, Z.-Y. Shen, C. Wilker, M. S. Brenner, and J. S. Martens JOURNAL OF SUPERCONDUCTIVITY Volume 6, Number 4 August 1993 CONTENTS REVIEW The Flux-Line Lattice in High-7, Superconductors Ernst Helmut Brandt ARTICLES Oxygen Vacancies, Zinc Impurities, and the Intrinsic Microwave Loss of YBa,Cu,0,_; D. A. Bonn, Kuan Zhang, Ruixing Liang, D. J. Baar, D. C. Morgan, and W. N. Hardy Induction-Drive Magnetohydrodynamic Propulsion D. L. Mitchell and D. U. Gubser Influence of Proton-Induced Defects on Transport and Structural Properties of Ceramic YBCO E. Mezzetti, F. Abbattista, D. Andreone, R. Cherubini, R. Gerbaldo, B. Minetti, F. Periale, and M. Vallino Flux-Creep Activation Energies at the Grain Boundaries of Y-Ba-Cu-O Superconductors in the Characteristic Frequency Band A. C. Bodi and I. Kirschner The Origin of Melt-Texture Crystal Growth Process in a Simple Tube Furnace P. C. W. Fung, J. C. L. Chow, T. F. Yu, and Z. L. Du Evidence for Unpinned Magnetic Flux Vortices Above the /. Transition in the 2223-Phase High-7.. Superconductor John Niska and Bengt Loberg Marginal Fermi Liquid Behavior for a Two-Dimensional Electronic System C. Popoviciu, T. Veres, and M. Crisan Influence of Ba Content and Ce Doping on the Structural Features of YBa,Cu,O, Superconductor—a Neutron Study A. Sequeira, H. Rajagopal, I. K. Gopalakrishnan, J. V. Yakhmi, and R. M. Iyer Time-Resolved Neutron Diffraction Study of the Superconducting Phase Formation Process in the Bi( Pb) -Sr—Ca—Cu—O System G. Aldica, G. M. Mironova, N. C. Popa, A. D. Stoica, and M. G. Stoica Dissipation in Current-Carrying High-7.. Superconducting Ceramics in Applied Magnetic Field L. Miu, S. Popa, A. Crisan, G. Aldica, and J. Jaklovszky Low-Temperature Magnetic and Microwave Studies of Gd, 4;Ba,Cu, 9;O0,_;:Ag, Composites B. K. Roul JOURNAL OF SUPERCONDUCTIVITY Volume 6, Number 5 October 1993 CONTENTS The Generalized Hartree-Fock Theory of Nonmagnetic High-Temperature Superconductors Moshe Dayan Polarization of a Neutron Beam Using a Superconductor Z. J. Yang, R. A. Dunlap, and D. J. W. Geldart The Role of Y/Ba on the Formation of High-7. Superconducting Phase in Y-Based System A. A. El-Hamalaway Investigation of the Dominant Point Defects in Tetragonal YBa,;Cu,O, at Elevated Temperatures I. Riess, O. Porat, and H. L. Tuller Optimal Perovskite-Type Substrates for High-Temperature Superconductor Layers A. N. Efimov and A. O. Lebedev Toward a Microscopic Analysis of the Marginal Fermi Liquid M. Crisan and L. Tataru On Crysiai Alignment in Polycrystaliine YBCO Materials Based on TEM Observation P. C. W. Fung, J. C. L. Chow, and J. Gao Preparation of Large-Area High-Quality YBCO Thin Films by Pulsed Laser Deposition with Si Heater and Composite Scanning of Laser and Target H. B. Lu, S. F. Xu, Y. J. Tian, D. F. Cui, Z. H. Chen, Y. Z. Zhang, L. Li, and G. Z. Yang Optical Conductivity of Single Crystals of Ba,_.M,BiO, (M = K, Rb, x = 0.04, 0.37) S. Guha, D. Peebles, V. Browning, T. Wieting, D. Chandler-Horowitz and M. Norton JOURNAL OF SUPERCONDUCTIVITY Volume 6, Number 6 December 1993 CONTENTS Transport of High-Temperature Superconductors in the Normal State I. A. Chaban Metastability-Induced Charge and Spin Fluctuations in 123 Type Superconductors H. P. Mohapatra, D. Behera, S. Misra, N. C. Mishra, and K. Patnaik Fabrication of Melt-Texture Growth YBCO Samples Using a Simple Muffle Furnace J. C. L. Chow and P. C. W. Fung Quantum Statistical Foundation to the Fermi Liquid Model and Ginzburg-Landau Wave Function Shigeji Fujita and Salvador Godoy Effect of Bi and Sr Concentrations on the Formation of the 2223 Phase in Bi-Pb—Sb-Sr—Ca—Cu-—O Materials, Obtained under Different Conditions of Thermal Treatment K. Konstantinov, N. Balchev, G. Gyurov, I. Stambolova, and I. Khristova AC Losses in Y, Ba,Cu,0,_;:Ag Tapes K. N. Mirchandani, Kamal K. Das, and Binod Kumar DC SQUIDs Based on YBCO Step Edge Junctions S. Matarazzo, S. Barbanera, V. Boffa, R. Bruzzese, F. Ciciulla, U.G ambardella, F. Murtas, S. Pagano, M. Penna, C. Romeo Percolative Behavior of Transport Properties in Granular High-7.. Superconductors E. Bellingeri, R. Eggenhéffner, and R. Masini +