ON THE VORTEX DYNAMICS IN BI(2212)

被引：2

作者：

ZIESE, M

KOTZLER, J

PIEPER, M

SPIRGATIS, A

BEHR, R

机构：

[1] Institut für Angewandte Physik, Universität Hamburg

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 104卷 / pt 1期

关键词：

Bismuth Compounds - Crystalline - Ceramic Materials - Diffusion - Models - High Temperature Superconductors;

D O I：

10.1016/0304-8853(92)90913-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on a comparative study of the vortex dynamics in crystalline and melt processed ceramic Bi2Sr2CaCu2O8 by ac susceptibility, which is described within the model of Thermally Activated Flux diffusion (TAFF). In the limit of small current densities the resulting activation energy U is independent of J and the temperature and field dependencies of U show evidence for diffusion of two-dimensional vortex lattice defects.

引用

页码：537 / 538

页数：2

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