The trapped field of YBCO bulk superconducting magnets

被引：59

作者：

Nagashima, K ^{[1
]}

Higuchi, T ^{[1
]}

Sok, J ^{[1
]}

Yoo, SI ^{[1
]}

Fujimoto, H ^{[1
]}

Murakami, M ^{[1
]}

机构：

[1] RTRI,KOKUBUNJI,TOKYO 185,JAPAN

来源：

CRYOGENICS | 1997年 / 37卷 / 10期

关键词：

YBCO; trapped field; bulk superconducting magnet; Hall probe; J(c)-B curves; critical state model;

D O I：

10.1016/S0011-2275(97)00058-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We have measured trapped field distributions by scanning a Hall probe on various rectangular YBCO bulk superconductors and studied the effects of field dependence of J(c) bulk thickness and bulk size on the trapped field. The trapped field could be increased by increasing the bulk thickness and size. However, a saturation was observed for the maximum thickness. We also calculated the distribution of trapped field taking account of the field dependence of J(c). Experimental trapped field distributions were in good agreement with our calculated values when we used the J(c)-B curves obtained from a d.c. magnetization measurement for samples. (C) 1997 Published by Elsevier Science Ltd.

引用

页码：577 / 581

页数：5

共 8 条

[1] CRITICAL-STATE MODEL FOR THE DETERMINATION OF CRITICAL CURRENTS IN DISK-SHAPED SUPERCONDUCTORS [J].