Crystallization of 107 K Superconducting Phase and Partial Melting in the Bi-(Pb)-Sr-Ca-Cu-O System
- 1 December 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (12A) , L2276
- https://doi.org/10.1143/jjap.27.l2276
Abstract
Formation of the superconducting phase with T c=107 K in the Bi-(Pb)-Sr-Ca-Cu-O system was studied for specimens with various nominal compositions. Examination of sintered specimens revealed that the 107 K phases crystallized in air in the temperature range where partial melting takes place. In the strict sense, it is impossible to obtain a pure ceramic consisting of the 107 K phase because of the presence of a small quantity of a solidified liquid phase. Unlike the Pb-free 107 K phase, the Pb-containing one showed zero electrical resistivity at 105 K even if it was annealed at a low oxygen pressure.Keywords
This publication has 5 references indexed in Scilit:
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