Superconductor crystal and process for preparing the same

Details Superconductor crystal and process for preparing the same Superconductor crystal and process for preparing the same

1991-10-16

1993-09-07

Kunemund, Robert

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505729, 156600, 156603, 156DIG112, C01F 1102, C30B 102

Patent

active

052428966

ABSTRACT:
A process for producing a fibrous crystal or single crystal of a superconductor comprising bismuth, strontium, calcium, copper, lead and oxygen, having an atomic composition ratio represented by the formula Bi.sub.2-x Pb.sub.x Sr.sub.1.9-2.1 Ca.sub.1.9-2.1 Cu.sub.3 o.sub.y wherein 0<.times.<0.4 and 10.0<y<11.0, and having a Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10 structure (2223 structure).

REFERENCES:
patent: 5057486 (1991-10-01), Arendt et al.
patent: 5057488 (1991-10-01), Arendt et al.
Zhanchun et al., "High Fe Superconductivity in Single Crystal of Bi-Ca-Sr-Cu-O" Solid State Communications vol. 67, No. 2, pp. 101-103, 1988.
Matsubara et al. "Preparation and Critical Density of Bismuth Strontium Calcium Copper Oxide (Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10.+-.x) . . . " Appl. Phys. Lett. 57(23) 1990, 2490-1, abstract only.

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