Magneto-optical imaging of transport currents in YBa2Cu3O7-x on RABiTS™

被引：21

作者：

Feldmann, DM ^{[1
]}

Reeves, JL

Polyanskii, AA

Goyal, A

Feenstra, R

Lee, DF

Paranthaman, M

Kroeger, DM

Christen, DK

Babcock, SE

Larbalestier, DC

机构：

[1] Univ Wisconsin, Ctr Appl Superconduct, Madison, WI 53706 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2001年 / 11卷 / 01期

关键词：

coated conductors; grain boundaries; magneto-optical imaging; RABiTS;

D O I：

10.1109/77.919885

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：

Two YBa2CU3O7-x. (YBCO) on RABiTS (TM) conductors with high J(c)(0 T,77 K) values of 2.3 and 2.4 MA/cm(2) were scribed by laser cutting to constrict supercurrent flow. On one of these tracks, magneto-optical (MO) imaging of the self-field produced by a transport current directly demonstrates the percolative nature of the current flow. Using Backscattered Electron Kikuchi Pattern (BEKP) analysis, we have found that Ni grain boundaries (GBs) > 5 degrees generally introduce GBs in the YBCO that have lower J(c) values than the intra-grain.

引用

页码：3772 / 3775

页数：4

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