Microstructures and superconducting properties of V doped Bi2223 tapes

被引：14
|
作者：
Maeda, H [1 ]
Kakimoto, K
Kikuchi, M
Willis, JO
Watanabe, K
Tanaka, Y
Kumakura, H
机构：
[1] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 98077, Japan
[2] Natl Res Inst Met, Tsukuba, Ibaraki 305, Japan
来源：
APPLIED SUPERCONDUCTIVITY | 1997年 / 5卷 / 1-6期
关键词：
D O I：
10.1016/S0964-1807(98)00019-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We prepared Ag-sheathed tapes by the powder-in-tube method using V doped Bi2223 powder. We found that V doping into Bi oxide superconductors greatly enhances the Bi2223 phase formation of the tapes without any degradation of the superconducting critical temperature T-c. The doped V is not included in the Bi2223 (or Bi2212) grains, but instead exists as Sr6V2O11 particles with diameters of 0.1 to several micrometers, in which the larger plate-like particles play an important role to promote the formation of the Bi2223 phase. With V doping, the optimum critical current density J(c) value is obtained for a short time heat treatment. (C) 1998 Published by Elsevier Science Ltd. Ali rights reserved.
引用
收藏
页码：151 / 156
页数：6
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