Contact-free determination of the current-voltage law parameters for melt-textured YBCO superconductors in orthogonal magnetic field

被引：0
|
作者：
Fisher, LM
Kalinov, AV
Stolyarov, VS
Voloshin, IF
Nesterov, ML
Yampol'skii, VA
Brandt, EH
机构：
[1] All Russian Elect Engn Inst, Moscow 111250, Russia
[2] NASU, Inst Radiophys & Elect, UA-61085 Kharkov, Ukraine
[3] Max Planck Inst Met Res, D-70506 Stuttgart, Germany
来源：
SOLID STATE COMMUNICATIONS | 2006年 / 138卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
current-voltage characteristics; relaxation; superconductivity;
D O I：
10.1016/j.ssc.2006.01.044
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A contact-free method to obtain the current-voltage characteristics (CVC) of hard superconductors by measuring the relaxation of the magnetization in a perpendicular magnetic field is developed. The relaxation curves obtained for melt-textured YBCO samples are well fitted by curves calculated within the electrodynamic model using a power-law CVC. This procedure uses only two fitting parameters, namely, the critical sheet current J(c) and the exponent tit of the power-law CVC. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：157 / 159
页数：3
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