Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – Superconductor next to layer containing nonsuperconducting...
Patent
1994-01-03
1994-12-13
Ryan, Patrick J.
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
Superconductor next to layer containing nonsuperconducting...
505701, 505237, 505239, 428688, 428700, 428701, 428930, B32B 900
Patent
active
053729927
ABSTRACT:
A superconducting thin film of a compound oxide represented by YBa.sub.2 Cu.sub.3 O.sub.y in which "y" is a number of 6<y<8 and deposited on a substrate, characterized in that a buffer layer of a compound oxide represented by Y.sub.2 BaCuO.sub.x in which "x" is a number of 4<x<6 is interposed between the superconducting thin film and the substrate.
REFERENCES:
patent: 4948779 (1990-08-01), Keur et al.
patent: 5024898 (1991-06-01), Chien
Williams et al in "Chemistry of High T Superconductors II", ACS 1988, ch. 22 pp. 291-302.
Guritch et al. "A metal alloy process for the formation of oxide superconducting films, Advantages, Problems Substrate Interactions, Buffer layers", Materials Rsch Soc. Symposium Proceeding, vol. 99 1988.
Yoshiara et al., "Superconductivity of Screen Printed YBa.sub.2 Cu.sub.3 O.sub.y Thick Films in Y.sub.2 BaCuO.sub.5 Substrates" Jap. Jour. of App. Phys. vol. 27 No. 8 Aug 1988 pp L1492-L1494.
Sahu, et al., "Overview of High Tc Superconductivity" in Chemistry of High Temperature Superconductors II, ACS 1988.
Gurvitch et al, in "High-Temperature Superconductors," M Brodsky, ed. Materials Research Society: Pittsburgh, 1988 (origninally presented at symposium in Boston, held Nov. 30, 1987-Dec. 4, 1987).
Superconductivity of Screen Printed YBa.sub.2 Cu.sub.3 O.sub.y Thick Films on Y.sub.2 BaCuO.sub.5 Substrates, Jap. Journ. Appl. Phy., vol. 27, No. 8, (Aug. 1988), pp. 1492-1494.
Dorris et al article, Japanese Journal of Applied Physics vol. 28, No. 8, Aug. 1989.
Higaki Kenjiro
Itozaki Hideo
Yazu Shuji
Jewik Patrick
Ryan Patrick J.
Sumitomo Electric Industries Ltd.
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