AC losses in high-temperature superconductors: revisiting the fundamentals of the loss modelling

被引：10
|
作者：
Paasi, J [1 ]
Lahtinen, M [1 ]
机构：
[1] Tampere Univ Technol, Lab Elect & Magnetism, FIN-33101 Tampere, Finland
来源：
PHYSICA C | 1998年 / 310卷 / 1-4期
基金：
芬兰科学院;
关键词：
transport AC loss; magnetic AC loss; E-J characteristic; magnetization;
D O I：
10.1016/S0921-4534(98)00433-X
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The fundamentals of the electromagnetic modelling of high-temperature superconductors are discussed. Special attention is paid to intrinsic features of high-temperature superconductors different to those of low-temperature superconductors. Examples of those features are strong thermal fluctuations, which results in enhanced flux creep and slanted E(J)-characteristics, anisotropy of critical current density and material resistivity, and the granularity of the material. Having established the fundamental principles for the loss modelling, the influence of thermal fluctuations, anisotropy and granularity on the AC losses are considered. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：57 / 61
页数：5
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