Improvement of Jc and Grain Alignment of Bi-2212/Ag Multilayer Tapes by Pre-Annealing and Intermediate Rolling Process

被引：0
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作者：
Kitaguchi, Hitoshi
Miao, Hanping
Kumakura, Hiroaki
Togano, Kazumasa
Hasegawa, Takayo
Koizumi, Tsutomu
机构：
[1] Natl. Research Institute for Metals, Tsukuba 305-0047, Japan
[2] CREST, Japan Sci. and Technol. Corporation, Tsukuba 305-0047, Japan
[3] Showa Elec. Wire and Cable Co. Ltd., Kawasak 210-0843i, Japan
来源：
Journal of Low Temperature Physics | / 117卷 / 5-6期
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摘要：
The high transport critical current density (Jc) > 500 kA/cm2 at 4.2 K, 10 T is obtained in the Bi-2212/Ag multilayer tapes fabricated by using PAIR (Pre-Annealing and Intermediate Rolling) and melt-solidification process. This Jc value is twice higher than existing high-quality Bi-2212/Ag tapes (250 kA/cm2). By applying PAIR process to Bi-2212/Ag tapes, Bi-2212 grain alignment is much improved and a large Jc enhancement is achieved. Jc has been increased strongly by performing pre-annealing at 840°C in oxygen (1 atm) and intermediate rolling with 25% deformation.
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页码：1525 / 1529
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