The Effect of Ca2PbO4 Addition on Superconductivity in a Bi-Sr-Cu-O System
- 1 January 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (1A) , L75
- https://doi.org/10.1143/jjap.28.l75
Abstract
We examined the effect of Ca2PbO4 addition on superconductivity in a Bi-Sr-Cu-O system. We determined that Ca2PbO4 is formed in Bi-Pb-Sr-Ca-Cu-O at temperatures lower than 750°C on the basis of powder X-ray diffraction and micro-Raman scattering. A high-T c phase was synthesized by adding Ca2PbO4 to the Bi-Sr-Cu-O system which has a single CuO layer. It seems that the synthesis process of the high-T c phase is based on a reaction between the low-T c structure and Ca2+ in the liquid phase which is caused by decomposition of Ca2PbO4 at 822°C.Keywords
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