Jpn. J. Appl. Phys. 27 (1988) pp. 2062-2064  |Next Article|  |Table of Contents|
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Superconductivity of Tl-Sr-Ca-Cu-O System in Relation to Tl-Ba-Ca-Cu-O and Bi-Sr-Ca-Cu-O Systems

Shimpei Matsuda, Seiji Takeuchi, Atsuko Soeta, Takaaki Suzuki, Katsuzo Aihara and Tomoichi Kamo

(Received August 24, 1988; accepted for publication September 17, 1988)

It was found that Tl-Sr-Ca-Cu-O system gives rise to at least two superconducting phases, a high-T_c phase at 100 K and a low-T_c phase at about 75 K. The two phases are isostructural to those of Bi-Sr-Ca-Cu-O system. Comparing the T_c's and crystal structures of the Tl and Bi systems, it was suggested that T_c is mainly determined by the combination of two alkaline earth elements, i.e., Sr/Ca or Ba/Ca, when the repetition unit in the layered perovskites is equal.

URL: http://jjap.jsap.jp/link?JJAP/27/2062/
DOI: 10.1143/JJAP.27.2062

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