Effect of microstructure on the superconducting properties of Gd-Ba-Cu-O bulk fabricated in air

被引：11

作者：

Nariki, S

Hinai, H

Sakai, N

Murakami, M

Otsuka, M

机构：

[1] ISTEC, Superconduct Res Lab, Minato Ku, Tokyo 1050023, Japan

[2] Shibaura Inst Technol, Minato Ku, Tokyo 1088548, Japan

来源：

PHYSICA C | 2001年 / 357卷 / 357-360期

关键词：

melt processing; critical temperature; critical current density; Gd-Ba-Cu-O;

D O I：

10.1016/S0921-4534(01)00373-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bulk Gd-Ba-Cu-O superconductors were melt processed in air. The Gd2BaCuO5 (Gd211) particles dispersed in the melt-textured bulk could be refined by employing fine Gd211 starting powders. Since T-c of the bulk samples was lowered with decreasing the size of Gd211 particle, J(c) was not improved. However, we found that a depression of T-c was prevented by Ag addition, leading to higher J(c) values. The J(c) of Gd-Ba-Cu-O/Ag with Gd211 particles about 0.7 mum in size exhibited 60 000 A/cm(2) at 77 K and self-field. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：817 / 820

页数：4

共 4 条

[1]

Haseyama S., 1999, ADV SUPERCONDUCTIVIT, VXI, P701

[2]

HINAI H, 1999, J CRYOGENIC SOC JPN, V34, P584

[3] Melt-processed light rare earth element-Ba-Cu-O [J].