Addition of New Pinning Center to Unidirectionally Melt Solidified Y-Ba-Cu-O Superconductor
- 1 November 1990
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 29 (11A) , L1999
- https://doi.org/10.1143/jjap.29.l1999
Abstract
Y-Ba-Cu-O bulk superconductor including small particles of BaSnO3 was synthesized by the unidirectional melt solidification method. Finely dispersed Y2BaCuO5 precipitates and BaSnO3 particles were observed in YBa2Cu3O y matrix. The critical current density at 77 K in 8 kOe was 1.8×104 A/cm2, which was about four times higher than that of the BaSnO3-free specimen. Fine particles of BaSnO3 (0.1–1 µm) can act as effective flux pinning centers in the specimen and result in an increase of the critical current density.Keywords
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