How to improve critical current properties of Bi2223 and MgB2 tapes

被引：6
|
作者：
Shimoyama, J.
Tanimoto, A.
Makise, T.
Yamamoto, A.
Katsura, Y.
Iwayama, I.
Horli, S.
Kishio, K.
Kato, T.
Kobayashi, S.
Yamazaki, K.
Hayashi, K.
Sato, K.
机构：
[1] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan
[2] Sumitomo Elect Ind Ltd, Osaka 5540024, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2007年 / 463卷
关键词：
Bi(Pb)2223; magnesium diboride; critical temperature; critical current properties; grain boundary flux pinning; doping effects; carbides;
D O I：
10.1016/j.physc.2007.01.049
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Improvement of critical current properties of well-developed Bi(Pb)2223 superconducting tapes has been still important subject for their extensive applications. On the other hand, enhancement of J(c) up to applicable level at 15-20 K in similar to 5 T is crucial for starting full-scale development of MgB2 materials. In this paper, we propose several effective methods to improve critical current properties of both Bi(Pb)2223 and MgB2 conductors mainly from chemical viewpoints. In particular, Tc of Bi(Pb)2223 was found to be largely enhanced by post-annealing in air. For MgB2, a promising guiding principle for improving flux pinning properties has been just established through various systematic studies. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：802 / 806
页数：5
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