Process for producing superconducting material

Details Process for producing superconducting material Process for producing superconducting material

1988-04-13

1990-01-09

Weisstuch, Aaron

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

20419224, 427 62, 4273839, 505725, 505730, 505731, H01L 3924, C23C 1434

Patent

active

048928623

ABSTRACT:
Oxide materials having the formulae (L.sub.x A.sub.1-x).sub.i MO.sub.y, (L.sub.x A.sub.1-x).sub.i -M.sub.1-z Cu.sub.z O.sub.y and (L.sub.x A.sub.1-x).sub.i MO.sub.j-.delta. G.sub.k, wherein L is Sc, Y, lanthanides, etc.; A is Ba, Sr, Ca, etc.; M is V, Nb, Ta, Ti, Zr or Hf; 0<x<1; 0<z<1; i=1, 3/2 or 2; 0<y.ltoreq.4; G is F, Cl or N; .delta. is oxygen defect, and having a perovskite-like crystal structure, show superconductivity at a temperature higher than the liquid nitrogen temperature these oxide materials can be produced by a substitution diffusion reaction between a substrate and a film or layer deposited on the substrate.

REFERENCES:
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Japanese Journal of Applied Physics, vol. 26, No. 4, part 2, Apr. 1987, pp. L337-L338, Tokyo, JP T. Hasegawa et al, "High Tc Superconductivity of La1-xSrx)2CuO4--Effect of Substitution of Foreing Ions for Cu and La . . . ".
Proceedings of the 18th International Conference on Low Temperature Physics, Japanese Journal of Applied Physics, Kyoto, 20th-26th, Aug. 1987, pp. 1141-1142, "Sputter Deposited Films of Perovskite Compound and Nb-Si-O . . . ".
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