High temperature T1-Ba-Ca-Cu-O and T1-Sr-Cu-O superconductor

Details High temperature T1-Ba-Ca-Cu-O and T1-Sr-Cu-O superconductor High temperature T1-Ba-Ca-Cu-O and T1-Sr-Cu-O superconductor

1988-02-12

1990-10-09

Lieberman, Paul

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

252521, 423604, 423624, 423635, 501123, 502346, 505783, C01F 1102, C01G 302, C01G 1500

Patent

active

049620835

ABSTRACT:
A new high temperature superconductor with transition temperature above 120 K is disclosed. The superconductor in a preferred embodiment comprises T1RBaCuO wherein R is chosen from Group 2A elements excluding Ba. In another preferred embodiment, the superconductor comprises T1SrCuO. Processes for making high temperature superconductors are also disclosed.

REFERENCES:
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Kishio, K., Effect of Lanthanide Ion Substitutions for Lanthanum Sites on Superconductivity of (La.sub.1-x Sr.sub.x).sub.2 CuO.sub.4, Japan Journal of Applied Physics, 26, No. 4, Apr. 20, 1987, L391-L393.
Ohshima, S., Superconducting and Structural Properties of the New Ba.sub.1-x Ln.sub.x CuO.sub.3-y Compound System (Ln=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Yb), Japan Journal Applied Physics, 26, No. 5, May 20, 1987, L815-L817.
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R. J. Cava, Bulk Superconductivity of 91 K in Single-Phase Oxygen-Deficient Perovskite Ba.sub.2 YCu.sub.3 O.sub.9-.delta., The American Physical Society, 1987, vol. 58, No. 16.
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Saito, "High-Tc Superconducting Properties in (Y.sub.x-1 Tl.sub.x)Ba.sub.2 Cu.sub.3 O.sub.7 ", Physica 148B, 1987, pp. 336-338.

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