Preparation of a Ag-Doped Bi-Sr-Ca-Cu-O Bulk Sample by the Floating-Zone Method
- 1 November 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (11A) , L1936
- https://doi.org/10.1143/jjap.28.l1936
Abstract
Bulk samples with nominal composition of Bi2Sr2CaCu2O y doped with 0, 10 and 20 weight % Ag were prepared by the floating-zone method at growth rates of 2 mm/h and 5 mm/h. Ag-doping seems to slightly enhance J c, while annealing is very effective for J c enhancement. From preliminary ac susceptibility measurements, the J c enhancement by annealing is considered to be due to improvement of the weak link between superconducting grains. The 10% Ag-doped sample grown at 2 mm/h possessed J c of 5360 A/cm2 at 77 K under zero magnetic field after annealing.Keywords
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