Magnetothermal instabilities in cylindrical melt-textured Y-Ba-Cu-O

被引：3

作者：

Wenger, C

Gladun, A

Krabbes, G

Fuchs, G

机构：

[1] TU Dresen, Inst Tieftemperaturphys, D-01062 Dresden, Germany

[2] Inst Festkoerper & Werkstofforsch, D-01171 Dresden, Germany

来源：

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

关键词：

flux jump field; magnetothermal instability; melt-textured Y-Ba-Cu-O;

D O I：

10.1109/77.919826

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 magnetothermal flux jump instabilities of the critical state in cylindrical melt-textured Y-Ba-Cu-O samples are investigated during the magnetization process. The flux jumps result in a drastic reduction of the magnetization accompanied by a strong heating of the sample. We determine the first flux jump field as function of the parameters, which influence the stability, such as the heat transfer coefficient between the surface of the sample and the surrounding, the sweep rate of the external field and the temperature of the sample. The comparison of the thermal and magnetic diffusivity of the melt-textured material indicates isothermal behavior of the flux jump scenario, supporting a dynamic stability criterion.

引用

页码：3533 / 3536

页数：4

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