Superconductive Transition at 120 K in a Tl-Bi-Sr-Ca-Cu-O System
- 1 July 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (7A) , L1167
- https://doi.org/10.1143/jjap.28.l1167
Abstract
Superconductivity and crystal structure of a Tl-Bi-Sr-Ca-Cu-O system were studied. A T c-onset temperature of 120 K as determined by AC susceptibility measurement was achieved for the nominal composition of Tl2Bi0.5Sr2Ca3Cu4O x ceramics sintered at 900°C for 100 h. The superconductive phases synthesized in the Tl-Bi-Sr-Ca-Cu-O system were (Tl, Bi)Sr2CaCu2O x and (Tl, Bi)Sr2Ca2Cu3O x (“1212” and “1223” phases). Superconductivity at 120 K may be due to this “1223” phase.Keywords
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