INTERGRAIN FLUX-CREEP IN HIGH-T(C) SUPERCONDUCTORS

被引：12

作者：

PAASI, J

ERIKSSON, JT

机构：

[1] Laboratory of Electricity and Magnetism, Tampere University of Technology, SF-33101 Tampere

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.48.9873

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Equations describing the intergrain flux creep of ceramic superconductors are derived. They are based on the behavior of small superconducting loops closed by overdamped Josephson junctions. The elementary loops are formed around nonsuperconducting regions between the grains, the loops acting as pinning centers. Despite different pinning mechanisms the equations for the relaxation of the intergrain current density in a static and a slowly varying external magnetic field are formally similar to those of the classical flux-creep theory based on volume pinning.

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页码：9873 / 9876

页数：4

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