Superconductivity and Applications. Questo articolo non è disponibile.Superconductivity and Applications

This Proceedings is a collection of papers presented at the Third Annual Conference on Superconductivity and Applications organized by the New York State Institute on Superconductivity. This year the Conference was held at the Buffalo Hilton Hotel on September 19- 21, 1989, with previous meetings on September 28-29,1987, and April 18-20, 1988. As in previous years, this meeting was highly successful, with an attendance of over three hundred researchers participating in lively scientific exchanges and discussions. The high quality of the talks is evident in this Proceedings. The field of high temperature superconductivity has matured considerably since its early days of media frenzy and rapid new discoveries. However, the enthusiasm and pace of research have not slowed down. A much better picture of the nature of high temperature superconductivity, the properties of these new materials and where they may find their eventual use has emerged. Processing techniques, especially thin film deposition, have been perfected nearly to the point of allowing commercial applications. We expect continued phenomenal growth of the field of high temperature superconductivity, both in terms of research and applications for many years to come.

Plenary Reviews.- The Electronic Structure of High Tc Copper Oxides.- Flux Pinning and Microstructure in YBa2Cu3O7.- Quantum Percolation Theory of High-Tc Superconductors.- The Fabrication and Application of High Tc Superconducting Thin Films.- Thin Films.- Physics of In-Situ Oxide Superconducting Thin Films Deposition.- Tailored Thin Films of Superconducting Bi-Sr-Ca-Cu Oxide Prepared by the Incorporation of Exotic Atoms.- In-Situ Processing and Theoretical Model for Deposition of Laser Ablated High-Tc YBa2Cu3O7 Superconducting Thin Films.- RF Plasma Deposition of YBa2Cu3O7?x Films.- Superconducting Films of Bi-Sr-Ca-Cu-O by lacer Deposition.- In-Situ Growth of Y1Ba2Cu3O7?x Thin Films on Three-Inch Wafers Using Laser-Ablation and an Atomic Oxygen Source.- Low-Pressure Metalorganic Chemical Vapor Deposition and Characterization of YBa2Cu3O7?x Thin Films.- Electrical Transport Measurements on Polycrystalline Superconducting Y-Ba-Cu-O Films.- Studies of Neutral and Ion Transport During Laser Ablation of 1:2:3 Superconductors by Optical Absorption Spectroscopy.- Study of Deposition of YBa2Cu3O7?x on Cubic Zirconia.- Interdiffusion Between Sputtered Mg0 Films and Sapphire Substrates.- Processing and Substrate Effects on YBaCuO Thin Films Formed by Rapid Thermal Annealing of CuBaO/Y2O3 Layered Structures.- Low-Temperature Metal-Organic Chemical Vapor Deposition (LTMOCVD) Route to the Fabrication of Thin Films of High Temperature Oxide Superconductors.- Physical Properties.- Josephson and Quasiparticle Tunneling in High-Tc Superconductors.- Electrodynamics of Superconducting Y1Ba2Cu3Oy.- Mechanisms of Heat Conduction in High-Tc Superconductors.- Acoustic Response of YBa2Cu3Ox Films.- Magnetization Study of High Tc Superconductors.- Microstructure and Electrical Properties of Bulk High-Tc Superconductors.- Electronic Structure Studies of Cuprate Superconductors.- Studies of Microstructures in High-Tc Superconductors by X-Ray Absorption Techniques.- Structural Complications in Superconducting Solids: Chemical Disorder, Structural Modulation, and Low Temperature Phase Transitions in the Bi-Sr-Ca Cuprates.- Local Structure and Distortions in Pure and Doped Y1Ba2Cu3O7??: X-Ray Absorption Studies.- Probing Charge on Cu in Oxide Superconductors.- Andreev Reflection and Tunneling Results on YBa2Cu3O7 and Nd2?xCexCuO4?y Single Crystals.- Positron Annihilation Studies of High Temperature Superconductors.- Weak Links and Planar Defects in Superconducting Cuprates.- Magnetic Field Dependence of Critical Current Density in Silver-Doped Y-Ba-Cu-O Superconductors.- Description of the Tl, Pb and Bi Cuprate High-Tc Superconductors (HTSC’s) as Intercalation Compounds and Classification of all HTSC’s According to Doping Mechanism.- La2MO4+? (M=Cu, Ni, Co): Phase Separation and Superconductivity Resulting from Excess Oxygen Defects.- Compositional Dependence and Characteristics of the Superconductive Bi-Sr-Ca-Cu-O System.- Of Grain Boundary Diffusion and Superconductivity in Bi-Pb-Sr-Ca-Cu-O Compound.- Dissipative Structures in Thin Film Superconducting Tl-Ca-Ba-Cu-O.- Grain Orientation in High Tc Ceramic Superconductors.- Mössbauer Effect Studies in YBa2Cu3?xSnyO7?x.- Energetics of Superstructures in the Bi-Series of Superconducting Compounds.- Microstructural Effects in Oxide Superconductors.- Theory.- Theory of Strongly Fluctuating Superconductivity.- Correlation in Metallic Copper Oxide Superconductors: How Large Is It?.- Squeezed Polaron Model of High Tc Superconductivity.- Local Pairing and Antiferromagnetism in High-Tc Superconductors.- Superconductivity Due to the Softening of the Breathing Mode in Ba1?xKxBiO3 Compounds.- Evidence for Pairing of Semions in Finite Systems.- Processing.- Oxygen Stabilized Zero-Resistance States with Transition Temperatures Above 200 K in YBaCuO.- Study of High Tc Superconductor/Metal-Oxide Composites.- Magnetic Alignment of Bi and Tl Cuprates Containing Rare Earth Elements.- The Removal of Organics from Tape Cast YBa2Cu3O7?x.- Anisotropic Critical Currents in Aligned Sintered Compacts of YBa2Cu3O7??.- YBa2Cu3O7??: Enhancing Jc by Field Orientation.- Surface Passivation of Y-Ba-Cu-O Oxide Using Chemical Treatment.- Carbon Fiber Reinforced Tin-Superconductor Composites.- Single Crystal Growth of 123 YBCO and 2122-BCSCO Superconductors.- The Effect of Ag/Ag2O Doping on the Low Temperature Sintering of Superconducting Composites.- Effect of Doping on Defect Structure and Phase Stability in Y-Based Cuprates: In-Situ TEM Studies.- Stability of Yttrium Barium Cuprate in Molten Salts.- Differential Thermal Analysis of the Y1Ba2Cu3Ox Complex.- Experimental Research of the Construction and Structural Relaxation of Bi-Sr-Ca-Cu-O Superconductivity System.- Anodic Oxidation of Metallic Superconducting Precursor.- A New Phase in the Na/Cu/O System Prepared by High Pressure Synthesis.- Effect of Magnetic Fields on Silver Contacts to YBCO and YBCO:Ag Composite Superconductors.- Fracture Behavior of Superconducting Films Prepared by Plasma-Assisted Laser Deposition.- Applications.- Multilayer Flexible Oxide Superconducting Tapes.- Josephson AC Effect in Tl-Based High-Tc Superconducting Bridge.- Sputtered High-Tc Superconducting Films as Fast Optically Triggered Switches.- Radiation Detection Mechanisms in High Temperature Superconductors.- RF Surface Resistance of a Magnetically Aligned Sintered Sample of YBa2Cu3O7.- Fabrication of a Technologically Useful Conductor Using Ceramic Superconductor.- Rapidly Solidified Superconducting Film on Metallic Wire.- Superconducting Projectile Accelerator.- Millimeter Wave Transmission Studies of YBa2Cu3O7?? Thin Films in the 26.5 to 40.0 GHz Frequency Range.- Fabrication of YBa2Cu3O7?x Superconducting Wires by Spray Deposition.- Microwave Loss Measurements on YBCO Films Using a Stripline Resonator.- Response of High Temperature Superconductors to a Step in Magnetic Field.- Development of a Composite Tape Conductor of Y-Ba-Cu-O.- Fabrication of High-Tc Superconducting Coatings by Electrostatic Fluidized-Bed Deposition.- Superconducting Power Transmission Lines Cost Assessment.- Contributers.