NASA Conference Publication 3290 Proceedings of the Fourth International Conference and Exhibition: World Congress on Superconductivity Volume I Kumar Krishen and Calvin Burnham, Editors Lyndon B.Johnson Space Center Houston, Texas Proceedings of a conference and exhibition held at Marriott Orlando World Center, Orlando, Florida, June 27 -July 1, 1994 1994 DISTRIBUTION OF THIS DOCUMENT IS UNLIMITED This publication is available from the NASA Center for AeroSpace Information, 800 Elkridge Landing Road, Linthicum Heights, MD 21090-2934 (301) 621-0390. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. 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The World Congress on Superconductivity The World Congress on Superconductivity (WCS) was formed in Houston in 1987 by a group of volunteer engineers and scientists interested in increasing the focus on this emerging technology field of superconductivity. The leadership of the WCS, a non-profit 501 (c)3 organization, is comprised of individuals from several major technical societies such as the Engineers Council of Houston, the American Chemical Society, IEEE, etc. This group is augmented by leaders of the international research, academic, science, government and business communities who serve on the Advisory Board or ad hoc committees. Since its inception, the Advisory Board has been global in scope with technologists from such countries as Japan, Russia, Switzerland, etc., actively involved in steering the direction of our programs. The goals of the WCS have been to establish and foster the development and commercial application of superconductivity technology on a global scale by providing a non-adversarial, non-advocacy forum where scientists, engineers, businessmen and government personnel can freely exchange information and ideas on recent developments and directions for the future of superconductive research. To date, four international conferences have been completed since 1987. These conferences were attended by over fifteen hundred delegates from thirty-six nations. The success of these conferences is remarkable in light of the fact that the WCS has no staff and must rely on monetary donations from the private sector, foundations and government agencies. In addition, thousands of man-hours have been donated by the WCS volunteer staff in the organizing of this activities. WCS is especially thankful for the assistance of Dr. Kumar Krishen as program chairman and the support from NASA which makes this activity possible. Because of the unique nature of the WCS and its success, the organization is sanctioned by the United Nations and is a member of the UN's Advance Technology Alert System. The WCS was awarded Leadership Houston's International Corporate award for its Munich conference in 1992. Plans are currently underway for the 5th International Conference of the World Congress on Superconductivity, which will be held in July 1996 in Budapest, Hungary. This meeting will coincide with the 1,100 year anniversary of Hungary. For more information on this meeting and WCS activities, please contact Calvin Burnham, President, World Congress on Superconductivity, P.O. Box 27805, Houston, TX 77227-7805; telephone 713-895-2500; fax 713-469-5788; e-mail: 70425.501 @compuserve.com in This page is intentionally left blank. CONTENTS Introduction xiii VOLUME 1 Session: PLENARY, ROUNDTABLE AND KEYNOTE Session Chair: Dr. Kumar Krishen Korea's Developmental Program for Superconductivity 3 Progress of Applied Superconductivity Research at Materials Research Laboratories, ITRI (Taiwan) 10 Progress in Superconductivity: The Indian Scenario 24 Superconductivity in Russia: Update and Prospects 37 Preparation, Structure and Superconductivity of High-Tc Compounds (Research of High Temperature Superconductors in Hungary) 48 High-Tc Superconductors: Technical and Commercial Challenge 56 Technical and Commercial Challenges in High Tc SQUIDs and Their Industrial Applications 60 Session: ACCELERATOR TECHNOLOGY Session Chair: Dr. Siegfried Wolff ' The LHC Magnet System and Its Status of Development 65 Status of High Temperature Superconductor Development for Accelerator Magnets 75 Development Work for a Superconducting Linear Collider 84 Session: POWER AND ENERGY Session Chair: Prof. Istvan Kirschner Today's Research Development on the Application of the Superconductivity Transport System in Japan 96 Measurement and Calculation of Levitation Forces Between Magnets and Granular Superconductors 106 ESR, Sims and Temf of an Y-Ba-Cu-O Superconductor 116 Serial and Parallel Power Equipment with High-Temperature Superconducting Elements 126 Session: PERSISTENT MAGNETIC FIELDS Session Chair: Dr. Roy Weinstein Stability, Mechanical Considerations, and AC Loss in HTSC Monoliths, Coils and Wires 138 Aspects of Passive Magnetic Levitation Based on High Tc Superconducting YBCO Thin Films 148 Hybrid Superconductor Magnet Bearings 157 Progress in HTS Trapped Field Magnets: Jc, Area, and Applications 158 The Superconducting MHD-Propelled Ship Yamato-1 167 Session: PERFORMANCE CHARACTERIZATION Session #1 Chair: Dr. R. K. Pandey Cochair: Dr. U. Varshney Electric Field Effect in Superconductor-Ferroelectric Structures 180 Oxide Perovskite Crystals for HTSC Film Substrates Microwave Applications 188 Texturing of High Tc Superconducting Polycrystalline Fibers/Wires by Laser-Driven Directional Solidification in a Thermal Gradient 198 Heavy Fermion Behaviour Explained by Bosons 209 Session #2 Chair: Dr. R. K. Pandey Cochair: Dr. U. Varshney An Electron Tunneling Study of Superconductivity in Amorphous SN^ Cu* Thin Films 222 Changes in the Superconducting Properties of High-Tc Ceramics Produced by Applied Electric Fields 232 an Effect of Nb2Os ^ V2O5 Addition on the Superconducting Properties of YBa2Cu3Oy Thin Films 241 Transparent Magnetic State in Single Crystal Nd185 Ceo15 CuO^ Superconductors 250 Processing and Property Evaluation of Metal Matrix Superconducting Materials 260 Session: PHYSICAL PROPERTIES Session PP-1 Chair: Prof. Valeri Ozhogin Cochair: Prof. Evgenii Z. Meilikhov Electronic Properties of Y-BA-Cu-0 Superconductors as Seen by Cu and O NMR/NQR 273 Quaternary Borocarbides - New Class of Intermetallic Superconductors 283 VI Electronic Structure and the Van Hove Singularity Scenario in High-Tc HgBa2 CuO4+s Superconductors 298 Boson Localization and Universality in YBa2Cu3.xMxO7.5 308 Thermomagnetic Phenomena in the Mixed State of High Temperature Superconductors 318 Spectroscopy of Infrared-Active Phonons in High-Temperature Superconductors 328 Session PP-2 Chair: Prof. Valeri Ozhogin Cochair: D. Brinkman Flux Pinning Characteristics and Irreversibility Line in High Temperature Superconductors 337 Effects of Neutron Irradiation on the London Penetration Depth for Polycrystalline Bi,.8Pba3Sr2Ca2Cu3 OI0 Superconductor 347 The Thermopower in the Temperature Range Tc-1000K and the Band Spectrum of Bi-Based Superconductors 354 Nonequilibrium Transport in Superconducting Filaments 359 Session: FABRICATION METHODOLOGY Session Chair: Dr. U. Balachandran High Tc Superconductors Fabricated by Plasma Aerosol Mist Deposition Technique 372 Partial Melting of Bulk Bi-2212 382 Correlation Between Fabrication Factor and Superconducting Properties of the Tl-and Bi-Based High Tc Superconductor 391 VOLUME 2 Session: SUPERCONDUCTIVE MAGNETIC ENERGY STORAGE (SMES) UTILITY INTEREST GROUP Session Chair Dr. Phillip Baumann SMES1: Technical Session Policy Issues Inherent in Advanced Technology Development 400 SMES 2: Technical Session Financial Options Methodology for Analyzing Investments in New Technology 405 SMES: Redefining the Path to Commercial Demonstration 410 Modular Transportable Superconducting Magnetic Energy Systems 416 VII Session: THIN FILMS Session Chair: Prof. Tomoji Kawai Optimization of the Deposition Conditions and Structural Characterization of Y, Ba2 Cu3 O,.* Thin Superconducting Films 423 Growth and Analysis of Highly Oriented (lln) BCSCO Films for Device Research 433 Structural, Transport and Microwave Properties of 123/Sapphire Films: Thickness Effect 440 Scanning Micro-Hall Probe Mapping of Magnetic Flux Distributions and Current Densities in YBa2Cu3O7 Thin Films 447 Angular Dependence of Critical Current Density and Magnetoresistance of Sputtered High-Tc-Films 457 Correlations Between Critical Current Density, jc, Critical Temperature, Tc, and Structural Quality of Y,B2Cu3O7.x Thin Superconducting Films 467 Session: HIGH TEMPERATURE MATERIALS Session #1 Chair: Prof. Mikio Takano The Oxygen Content of the High-Temperature Superconducting Compound Bi2«SR-)_y CayCu2O8+<i with Respect to Varying