Microstructures and Jc-B Characteristics of Ag-Sheathed Bi-Based Superconducting Wires
- 1 August 1991
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 30 (8A), L1384
- https://doi.org/10.1143/jjap.30.l1384
Abstract
We prepared silver-sheathed BiPbSrCaCuO wires by the powder-in-tube method. Maximum critical current densities at 77.3 K were 5.4×104 A·cm-2 in a zero magnetic field, 4.2×104 A·cm-2 at 0.1 T and 1.2×104 A·cm-2 at 1 T. At 77.3 K, as the J c improves, the history effects decrease. J c and J c-B enhancements are due to the decrease and dispersion of nonsuperconducting phases, and to grain boundary improvements.Keywords
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