Adjusting the transition temperature, the saturation current den

Details Adjusting the transition temperature, the saturation current den Adjusting the transition temperature, the saturation current den

1988-10-26

1992-09-22

Niebling, John

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

204130, 505825, H01L 3900, H01L 3912

Patent

active

051496852

ABSTRACT:
The transition temperature, the saturation current density with and without a magnetic field and the proportions of normally conducting phases of ceramic superconductors having a structure derived from perovskite are adjusted by changing the content of the electronegative component or, where a plurality of such components is present, of one of the electronegative components in the ion lattice of the superconductor directly on the substrate.

REFERENCES:
patent: 3784452 (1974-01-01), Martens et al.
patent: 4013531 (1977-03-01), Nakamura et al.
patent: 4127452 (1978-11-01), Martens et al.
patent: 4392928 (1983-07-01), Yang et al.
patent: 4456506 (1984-06-01), Stein et al.
O'Sullivan et al, "Study of Oxygen Transport in Ba.sub.2 YCu.sub.3 O.sub.7-.delta. Using a Solid State Electrochemical Cell", Appl Phys. Lett. 52(17) 1441-1443, Apr. 25, 1988.
Possible High T.sub.c Superconductivity in the Ba-La-Cu-O System, Bednorz and Muller, Z. Phys. B.-Condensed Matter 64, pp. 189-193 (1986).
Oxygen Stoichiometry in Ba.sub.2 YCu.sub.3 O.sub.x, Gallagher et al., Mat. Res. Bull., vol. 22, pp. 995-1006.
Superconductivity at 155K, Ovshinsky et al., Physical Review Letters, vol. 58, No. 24, Jun. 15, 1987.

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