FLUX PINNING AND CREEP FROM COLUMNAR DEFECTS IN HIGH-TEMPERATURE SUPERCONDUCTORS

被引：12

作者：

KONCZYKOWSKI, M

机构：

[1] Laboratoire des Solides Irradiés, URA 1380 CNRS, Ecole Polytechnique

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1993年 / 209卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(93)90916-E

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The introduction of linear defects by means of heavy ion irradiation (5.8 GeV Pb) leads to drastic enhancement of the flux pinning in BSCCO and YBCO crystals. In irradiated samples, the magnetic relaxation is depressed but not completely eliminated. The magnetic decay is non-logarithmic indicating flux creep via a nucleation process. The effective barrier for flux creep corresponding to vortex loop formation is much lower than the pinning energy by columnar defects.

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页码：247 / 250

页数：4

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