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High-Tc Superconducting Films of Y-Ba-Cu Oxide Prepared by a Low Pressure Plasma Spraying

Published online by Cambridge University Press:  28 February 2011

K. Tachikawa
Affiliation:
Department of Materials Science, Tokai University, Hiratsuka, Kanagawa 259–12, Japan
I. Watanabe
Affiliation:
Steel Research Center, Nippon Kokan K.K., Kawasaki-ku, Kawasaki 210, Japan
S. Kosuge
Affiliation:
Steel Research Center, Nippon Kokan K.K., Kawasaki-ku, Kawasaki 210, Japan
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Abstract

A low pressure plasma spraying technique for depositing high-Tc YBCO thick films has been developed. Films with thickness ranging 20–100 μm have been prepared using Y0.3Ba0.7CuOx powders. After post-annealing in oxygen for 1h at 930–950°C, the films, which were deposited on nimonic alloy substrate heated at 650°C during spraying, exhibited a zero resistance temperature of 90.6K with transition width (90%-10%) of 2K and a critical current density (77K, 0T) of 690 A/cm2.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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References

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