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Science 19 August 1988:
Vol. 241. no. 4868, pp. 922 - 930
DOI: 10.1126/science.241.4868.922
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Articles

Processing Techniques for the 93 K Superconductor Ba2YCu3O7

D. W. MURPHY 1, D. W. JOHNSON JR. 1, S. JIN 1, and R. E. HOWARD 2

1 AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, NJ 07974.
2 AT&T Bell Laboratories, Crawfords Corner Road, Holmdel, NJ 07733.

Superconductivity above the temperature of liquid nitrogen in copper oxide-based systems has led to optimism that superconductors may at last find wide application. The critical temperature, however, is just one of the required parameters. The materials must be made into usable forms such as wire, thick films, thin films, and bulk ceramics. In addition, the critical current in these various forms is a crucial test of their utility. This article reviews the processing techniques used to fabricate potentially useful forms and assesses remaining problems. Considerable improvement in critical current density is necessary in bulk materials, and thin films need to be made compatible with other thin-film technology.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Ceramic Thin Films: Fabrication and Applications.
M. Sayer and K. Sreenivas (1990)
Science 247, 1056-1060
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)