Effect of Calcination Temperature on Formation of a Bi, Pb-Sr-Ca-Cu-O Superconductor via the Sol-Gel Method
- 1 June 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (6A) , L934
- https://doi.org/10.1143/jjap.28.l934
Abstract
An oxide superconductor in the Bi, Pb-Sr-Ca-Cu-O system has been prepared by the sol-gel method, and the effect of calcination temperature on the formation of the high-T c phase has been examined. Calcination at 830°C before the reheat treatment at 845°C is the most effective for the formation of the high-T c phase, as revealed by X-ray diffraction analysis. From this fact, we conclude that the nucleation of the high-T c phase is apt to take place at around 830°C. The T c value of the specimen calcined at 830°C and reheated at 845°C for 24 h is 90 K.Keywords
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