Examination of current limiting mechanisms in monocore Bi2Sr2Ca2Cu3Ox tape with high critical current density

被引:19
|
作者
Polyanskii, A [1 ]
Feldmann, DM
Patnaik, S
Jiang, J
Cai, X
Larbalestier, D
DeMoranville, K
Yu, D
Parrella, R
机构
[1] Univ Wisconsin, Appl Superconduct Ctr, Madison, WI 53706 USA
[2] Amer Superconductor Corp, Westborough, MA 01581 USA
关键词
BSCCO tape; Magneto-optical imaging; current reconstruction; connectivity of grains;
D O I
10.1109/77.919760
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Magneto-optical imaging, electromagnetic measurements and SEM have been used for the characterization of a monoeore BSCCO tape made by oxide powder-in-tube process which had a transport J(c) (77K, 0T) of 37kA/cm(2), Our study evaluates the connectivity between superconducting grains and reconstructs the local current distribution at < 10 mum scale. Some local regions are found to carry ap to 180 kA/cm(2) at 77 K, a new record for BSCCO wires.
引用
收藏
页码:3269 / 3272
页数:4
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