Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – Superconductor next to layer containing nonsuperconducting...
Patent
1993-05-21
1994-05-24
Skaling, Linda
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
Superconductor next to layer containing nonsuperconducting...
427 62, 4271263, 428697, 428930, 505701, 505729, 505741, 505451, 505473, 505476, 505325, 505452, B05D 512, B32B 1800, C30B 2502, H01L 3900
Patent
active
053148711
ABSTRACT:
According to the present invention, when a superconductive thin film is formed on a substrate of a single crystal, a compound having a composition of SrNdGaO.sub.4 and a K.sub.2 NiF.sub.4 type crystal structure is used as a material employable for the substrate. Alternatively, a single crystal composed of an oxide in which Ca, La and Cr are added to the foregoing compound is used as a material employable for the substrate. Then, a superconductive thin film composed of an oxide is formed on the substrate by employing an epitaxial growing method. Thus, the present invention makes it possible to provide a superconductive material having an excellent property of lattice alignment, a stable and high critical superconductivity temperature and a stable critical superconductivity electric current.
REFERENCES:
patent: 4199396 (1980-04-01), Brandle
patent: 4379853 (1983-04-01), Mateika
patent: 4454206 (1984-06-01), Mateika
patent: 4820445 (1989-04-01), Piekarczyk
International Application, International Publication No. WO 90/04857, Claim 1., May 1990.
"Superconducting Thin Films of Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.sub.3 Oy and Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.sub.3 OY'," Ginley, Physical vol. 156, pp. 592-598. Nov. 1988.
Joint Committee on Powder Diffraction Standards No. 24-1191, Gordon, 1974. (No Month available).
Boyd John
Kabushiki Kaisha Komatsu Seisakusho
Skaling Linda
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