Superconducting Characteristics and Microstructure of Bi-Pb-Sr-Ca-Cu-O Ceramics
- 1 December 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (12A), L2300
- https://doi.org/10.1143/jjap.27.l2300
Abstract
The influence of the processing on the superconducting characteristics was investigated for the new high-T c Bi-Pb-Sr-Ca-Cu-O ceramics prepared under various sintering conditions. The critical temperature T c,zero and the critical current density J c at 77 K under zero magnetic field were strongly dependent on the sintering temperature. The maximum values of 105 K and 26 A/cm2 were obtained for the specimen sintered at 845°C. For the specimen sintered at 850°C, these values were lower although the volume fraction of the high-T c phase was higher than that of the specimen sintered at 845°C. This difference was discussed in terms of the microstructure of the superconducting ceramics.Keywords
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