MAGNETOSTRICTION AND THERMAL-EXPANSION OF HIGH-TEMPERATURE SUPERCONDUCTORS

被引：11

作者：

SCHMIDT, A ^{[1
]}

STELLMACH, F ^{[1
]}

EWERT, S ^{[1
]}

机构：

[1] TU COTTBUS,INST PHYS,O-7500 COTTBUS,GERMANY

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)91393-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Measurements of large magnetostriction (MS) on single crystalline high-T(c) materials (YBa2Cu3Ox and Bi2Sr2CaCu2Ox) are reported. It can be proved that this MS is due to flux line pinning by investigating three typical features: (i) The MS measurements may be fitted with a model which is based on pinning in the critical state. (ii) Cycling the temperature when measuring the thermal expansion with applied field shows the correlation between MS and flux line distribution. (iii) The relaxation of MS after an applied field is switched off is logarithmic in time, similar to j(c).

引用

页码：1787 / 1788

页数：2

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