Examination of current limiting mechanisms in monocore Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ tape with high critical current density
Examination of current limiting mechanisms in monocore Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ tape with high critical current density
复制标题
高临界电流密度单核 Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ 带限流机制的检查
DOI：
10.1109/77.919760
复制
发表时间：
2001
影响因子：
1.8
通讯作者：
R. Parrella
中科院分区：
文献类型：
--
作者：
A. Polyanskii;D. Feldmann;S. Patnaik;Jianyi Jiang;X. Cai;D. Larbalestier;K. Demoranville;D. Yu;R. Parrella
磁光成像、电磁测量和 SEM 已用于表征通过氧化物管内粉末工艺制成的单芯 BSCCO 带，其传输 J/sub c/ (77 K, 0 T) 为 37 kA/cm/sup 2/。我们的研究评估了超导颗粒之间的连通性，并重建了 <10 /spl mu/m 尺度的局部电流分布。一些局部区域在 77 K 时被发现承载高达 180 kA/cm/sup 2/，这是 BSCCO 电线的新记录。
Magneto-optical imaging, electromagnetic measurements and SEM have been used for the characterization of a monocore BSCCO tape made by oxide powder-in-tube process which had a transport J/sub c/ (77 K, 0 T) of 37 kA/cm/sup 2/. Our study evaluates the connectivity between superconducting grains and reconstructs the local current distribution at <10 /spl mu/m scale. Some local regions are found to carry up to 180 kA/cm/sup 2/ at 77 K, a new record for BSCCO wires.