Method of forming an inorganic protective layer on an oxide supe

Details Method of forming an inorganic protective layer on an oxide supe Method of forming an inorganic protective layer on an oxide supe

1990-10-09

1993-10-12

King, Roy

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505731, 505732, 505730, 427 62, 4274193, 4274192, 4274197, 427314, 4271263, 20419224, 20419222, 20419223, 428930, B05D 512

Patent

active

052525473

ABSTRACT:
An outer surface of a superconducting film of compound oxide such as YBa.sub.2 Cu.sub.3 O.sub.7-.delta. is protected with a protective layer which is composed of any one of (i) oxide of metal such as MgO, CaO, SrO etc, (ii) carbide such as SiC, or (iii) nitride such as BN.

REFERENCES:
patent: 3905037 (1975-09-01), Bean et al.
patent: 4866032 (1989-09-01), Fujimori et al.
patent: 4916116 (1990-04-01), Yamazaki
Ichikawa et al, "Effect of Overcoating With Dielectric Films on the Superconductive Properties of the High-T.sub.c Y-Ba-Cu-O Films", Jpn. J. Appl. Phys. 27(3) Mar. 1988 L381-383.
Maeda et al, "A new high-T.sub.c oxide superconductor without a rare earth element," Jpn. J. Appl. Phys. 27(2) Feb. 1988 L209-210.
Kawasaki et al, "Compositional and Structural Analyses for Optimizing the preparation conditions of superconducting (La.sub.1-x Sr.sub.x).sub.y CuO.sub.4-.delta. films by sputtering", Jpn. J. Appl. Phys. 26(4) Apr. 1987 L388-390.
Asano et al, "High-T.sub.c Y-Ba-Cu-O thin films prepared by dual magnetron sputtering", Jpn. J. Appl. Phys. 26(7) Jul. 1987 L221-222.
Gurvitch et al, "Preparation and Substrate Reactions of Superconducting Y-Ba-Cu-O Films", Appl. Phys. Lett. vol. 51(26) Sep. 1987 pp. 1027-1029.
Gavaler et al, "Fabrication of High-T.sub.c Superconducting YBa.sub.2 Cu.sub.3 O.sub.7 Films", MRS (Apr. 1988) (Reno, Nev.) pp. 193-196.

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