Development of multilayer Bi2Sr2CaCu2Ox superconducting tapes

被引:9
作者
Hasegawa, T [1 ]
Koizumi, T
Ohtani, N
Kitaguchi, H
Kumakura, H
Togano, K
Miao, H
机构
[1] Showa Elect Wire & Cable Co Ltd, Kanagawa 2108660, Japan
[2] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan
[3] Japan Sci & Technol Corp, CREST, Ibaraki, Osaka 3050047, Japan
关键词
D O I
10.1088/0953-2048/13/1/304
中图分类号
O59 [应用物理学];
学科分类号
摘要
High critical density (J(c)) over 500 kA cm(-2) (at 4.2 K and 10 T) was obtained in Bi2Sr2CaCu2Ox multilayer superconducting tapes processed by the pre-annealing and intermediate rolling (PAIR) technique. The PAIR process was effective in creating a dense care with lower carbon content, resulting in homogeneous chemical reactions, small amount of impurity phases and good alignment of superconducting grains. In production of long tal,cs, reducing the carbon content was the most serious challenge. A J(c) value of 7.1 x 10(5) A cm(-2) at 4.2 K in self-field was obtained in a 100 m long tape when the carbon content could be controlled to be 0.002 wt%. We fabricated a double-pancake coil using a 100 m long tape and tested it at 4.2 K in backup fields. The coil generated 2 T in a backup field of 4 T.
引用
收藏
页码:23 / 28
页数:6
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