Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1988-02-26
1989-11-14
Albrecht, Dennis
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
252518, 252521, 423604, 423617, 423618, 423619, 423635, 501 94, 501123, 501126, 505809, 505810, C01F 1102, C01G 2102, C01G 2900, H01L 3912
Patent
active
048807710
ABSTRACT:
Novel superconductive Pb-substituted oxides are disclosed. The oxides all have layered perovskite-like crystal structure, and manifest superconductivity (R=o) above about 77K. The materials are described by the nominal formula X.sub.2+x M.sub.3-x Cu.sub.2 O.sub.8.+-..delta., where X is Bi and Pb, M is Sr and Ca, 0.ltoreq..times..ltoreq.0.3, 0.ltoreq..delta..ltoreq.0.5, the Pb/Bi ratio is between about 0.2 and about 0.5, and the Sr/Ca ratio is between 0.5 and 2.
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Cava Robert J.
Sunshine Steven A.
Albrecht Dennis
American Telephone and Telegraph Company AT&T Bell Laboratories
Pacher Eugen E.
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