Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-04-10
1992-06-30
Bell, Mark L.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
501 10, 501 41, 505733, 505782, C03C 1002, C03C 312, H01B 108
Patent
active
051263211
ABSTRACT:
A superconductor and precursor therefor from oxide mixtures of Ca, Sr, Bi and Cu. Glass precursors quenched to elevated temperatures result in glass free of crystalline precipitates having enhanced mechanical properties. Superconductors are formed from the glass precursors by heating in the presence of oxygen to a temperature below the melting point of the glass.
REFERENCES:
Komatsu, T. et al.; "High-T.sub.c Superconducting Glass Ceramics Based on e Bi-Ca-Sr--Cu-O System"; Japanese Journal of Applied Physics, vol. 27, No. 4 Apr. 1988, pp. 6550-6552.
Minami, T. et al.; "Glass Formation-of High T.sub.c Compound BiCaSrCu.sub.2 O.sub.x by Rapid Quenching" Japanese Journal of Applied Physics, vol. 27, No. 6, Jun. 1988, pp. L777-L778.
Inoue, A. et al.; "Production of Bi-Sr-Ca-Cu-O Glasses by Liquid Quenching and Their Glass Transition and Structural Relaxation", Japanese Journal of Applied Physics vol. 27, No. 6, Jun. 1988, pp. 941-943.
Kim, N. et al.; "Preparation, Crystallization & Properties of Rapidly Solidified YBa.sub.2 Cu.sub.3 O.sub.7-8 "; Materials Letters, vol. 5, No. 10, Sep. 1987, pp. 387-389.
Matsushita, K. et al.; Translation of Japanese Nikkan Kogyo News Mar. 16, 1988, 5 pages.
Bhargara, A. et al. "Crystallization of Ba.sub.2 YCu.sub.3 O.sub.x From Glasses in the System BaO-Y.sub.2 O.sub.3 -CuO-B.sub.2 O.sub.3 "; Extended Abstracts-High-Temperature Superconductors II; Materials Research Society, Apr. 5-9, 1988.
Capone, II Donald W.
Hinks David G.
Anderson Thomas G.
Bell Mark L.
Moser William R.
The United States of America as represented by the Department of
Weinberger James W.
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