ISTEC-MRS Workshop Covers Processing of High-Temperature Superconductors
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ISTEC-MRS Workshop Covers Processing of High-Temperature Superconductors An international workshop on Controlled Processing of High-Temperature Superconductors: Fundamentals and Applications was held at the Maui Intercontinental Resort, Hawaii, on June 17-21, 1995. The workshop was co-sponsored by the International Superconductivity Technology Center (ISTEC) of Japan and the Materials Research Society. From 1989 through 1991, and in 1993 and 1994, ISTEC sponsored workshops in Japan on various topics in superconductivity. In 1992, MRS co-sponsored with ISTEC a workshop in Honolulu, Hawaii, on Controlled Crystal Growth of High-Temperature Superconductors. This year's workshop was a direct descendant of the previous workshops and embraced a subject similar to that of the previous Hawaii gathering. As such, progress made over the past three years in processing and properties could be readily assessed by the talks and posters presented. The goals of the 1995 Workshop were implicit in the session topics: controlled crystal growth, strong flux pinning, process control for thin film growth, bulk applications, thin film applications, transport and current paths, and processing and characterization of wires and tapes. The combination of state-of-the-art information and focused audience interest, present within an informal and pleasant atmosphere, was thought to be ideal for promoting exchange among researchers, and thus for furthering the drive toward full-scale emergence of superconducting technologies. The workshop was chaired by Shoji Tanaka of ISTEC and Julia M. Phillips of MRS. Financial support was provided by ISTEC, the Japan Keirin Association, the International Science Foundation, the National High Magnetic Field Laboratory at Florida State University, the Texas Center for Superconductivity at the University of Houston, the Science and Technology Center for Superconductivity at the University of Illinois at UrbanaChampaign, and the DOE-funded Superconductivity Technology Centers at Argonne, Oak Ridge, and Los Alamos National Laboratories. The four-day program was attended by 181 people from 16 countries. In addition to three days of talks, approximately 100 posters were presented. The technical program began with an Opening Ceremony, followed immediately by a series of plenary talks. C.W. Chu (University of Houston) talked on new materials, emphasizing work with Hgbased materials, and compounds such 4, and
Sr2CuO4. Fundamental issues related to Tc and doping were addressed. M. Murakami (ISTEC) followed with a talk on melt-processed RE-123 materials. Apparently several applications will require improvements in flux pinning over that of conventional Y-123. Murakami summarized recent improvements obtained by doping, including use of Nd-123. D. Larbalestier (University of Wisconsin) talked about another material envisioned for widescale use, clad Bi-2223 tapes. The focus was on transport paths and microstructural features that limit critical current density. Y. Tanaka (Furakawa Electric) spoke on power applications of
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