The effect of oxygen partial pressure and cooling rate during processing on the critical current density and grain coupling of Bi-2212/Ag tapes

被引：4
|
作者：
Fujii, H
Nakane, T
Kumakura, H
Yamaguchi, H
机构：
[1] Natl Inst Mat Sci, Superconducting Mat Ctr, Tsukuba, Ibaraki 3050047, Japan
[2] Natl Inst Mat Sci, Mat Anal Stn, Tsukuba, Ibaraki 3050047, Japan
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2006年 / 19卷 / 02期
关键词：
D O I：
10.1088/0953-2048/19/2/014
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We discuss the reason why high oxygen partial pressure (P-O2) heat treatment is effective in increasing the critical current density (J(c)) of Bi2Sr2CaCu2Oy (Bi-2212)/Ag tapes prepared by a partial melting and subsequent slow cooling method. The high J(c) values obtained by the high P-O2 heat treatment is attributed to the strong coupling of grains due to the suppression of the formation of non-superconducting phases at grain boundaries and the decrease of anisotropy due to the high oxygen content of the Bi-2212.
引用
收藏
页码：233 / 236
页数：4
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