Position dependence of superconducting properties of large single domain Sm-Ba-Cu-O bulk superconductors prepared under various conditions

被引：7

作者：

Latha, B

Yoshikawa, M

Yanagi, Y

Yamada, T

Itoh, Y

Ikuta, H

Mizutani, U

机构：

[1] Nagoya Univ, Dept Crystalline Mat Sci, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Venture Business Lab, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[3] IMRA Mat R&D Co Ltd, Kariya, Aichi 4480021, Japan

[4] Nagoya Univ, CIRSE, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 392卷

关键词：

Sm-Ba-Cu-O; melt-processing; flux pinning; critical current density (J(c)); position dependence;

D O I：

10.1016/S0921-4534(03)01005-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the position dependence of superconducting properties of c-axis oriented large single domain Sm-Ba-Cu-O (SmBCO) bulk superconductors, which have been successfully fabricated with the oxygen controlled melt growth method using Nd-Ba-Cu-O as a seed crystal under various conditions. The superconducting properties of small specimens cut from the large single domain SmBCO strongly depend on their location and T-c is always lower under the seed crystal than that near the edge of the sample. To enhance the homogeneity of the bulk superconductor, we have studied the effect of the maximum temperature (T-max) and the holding time (t(h)) during partial melting. It was found that the variation of the superconducting properties with position can be greatly reduced with higher T-max and/or longer t(h). (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：521 / 525

页数：5

共 5 条

[1] Synthesis and superconducting properties of c-axis aligned, single-domain NdBCO/Ag, melt-processed superconductors [J].