A COMPARISON OF THE E-J CHARACTERISTICS OF 4 NBTI SUPERCONDUCTING COMPOSITES AT EQUIVALENT ELECTRIC-FIELD LEVELS FROM 10(-4) TO 10(-7)VM-1

被引：1

作者：

JENKINS, RG

JONES, H

KILLORAN, N

TIMMS, W

机构：

[1] University of Oxford, University of Oxford, Clarendon Laboratory, Oxford

[2] Oxford Instruments Ltd., University of Oxford, Clarendon Laboratory, Oxford

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 02期

关键词：

D O I：

10.1109/20.133395

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：

The four-terminal short sample test used to measure the critical currents of commercial superconducting composites typically employs equivalent electric field levels of 10(-5) and 10(-4) Vm-1 to specify the onset of the superconducting-resistive transition. We describe refinements to this technique enabling resolution of the transition at the 10(-7) Vm-1 level. Data on four samples of NbTi conductor are compared over the full electric field range available using the above method, illustrating the influence of composite geometry and matrix material on the detailed form of the E-J characteristic.

引用

页码：1182 / 1185

页数：4