Development of Gd-Ba-Cu-O bulk magnets with very high trapped magnetic field

被引：40
|
作者：
Nariki, S [1 ]
Sakai, N [1 ]
Murakami, M [1 ]
机构：
[1] ISTEC, Superconduct Res Lab, Minato Ku, Tokyo 1050023, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 378卷
关键词：
melt processing; trapped magnetic field; critical current density; Gd-Ba-Cu-O;
D O I：
10.1016/S0921-4534(02)01510-1
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The field-trapping characteristics of recently developed Gd-Ba-Cu-O bulk superconductors will be reported. Large Gd-Ba-Cu-O bulk superconductors with Ag addition were melt-textured under controlled oxygen partial pressure of 1.0%. The single domain Gd-Ba-Cu-O bulk samples 24-50 mm in diameter with submicron-sized Gd2BaCuO5 inclusions could be fabricated without cracks. The field trapping abilities of the bulk samples could dramatically be enhanced through the size reduction of Gd2BaCuO5 particles and the enlargement of grain size. The trapped magnetic field of the bulk Gd-Ba-Cu-O superconductor 50 mm in diameter and 30 mm in thickness reached an extremely high value of 2.7 T at 77 K. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：631 / 635
页数：5
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