HIGHLY REPRODUCIBLE HIGH CRITICAL-CURRENT DENSITY IN PARTIAL-MELT BI2SR2CACU2OY/AG TAPES FABRICATED BY ELECTROPHORETIC DEPOSITION

Journal article

Highly c-axis-oriented Bi2Sr2CaCu2Oy/Ag tapes with high critical current density (Jc) were prepared by electrophoretic deposition followed by partial-melt processing. Slow cooling at 0.2 °C min-1 from the partial-melt temperature and a subsequent prolonged annealing at 825-830 °C resulted in an almost phase-pure highly textured microstructure in the samples fabricated from partly reacted precursor powder. The transport Jc can be improved to 1.7 × 104 A cm-2 at 77 K, and, at 4.2 K, 3.0 × 102 A cm-2 (Ic = 470 A for a 6 mm wide sample) and 1.3 × 105 A cm-2 with zero and 15 T applied magnetic induction, respectively. Values of Jc were reproducible to within 10% for samples that experienced the same heat treatment and were of similar thickness.

Authors: Huang, S; Dewhughes, D; Yang, M; Morgan, C; Grovenor, C

• Publication status: Published
• Journal: SUPERCONDUCTOR SCIENCE and TECHNOLOGY
• Volume: 8
• Issue: 1
• Pages: 32-40
• Publication date: 1995-01-01
• DOI: 10.1088/0953-2048/8/1/006
• EISSN: 1361-6668
• ISSN: 0953-2048