Possible Breakthrough for Higher $T_{\text{c}}$ Discovered in Bi(Pb)2223 Practical Tapes
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概要
- 論文の詳細を見る
By systematic studies on the post-annealing effect in air for Bi(Pb)2223 practical tapes, $T_{\text{c(onset)}}$ was found to be enhanced up to 115.2 K by annealing at 680°C for 250 h from 110.2 K for an as-synthesized tape. Annealing at $\sim$700°C for a long time always increased the $T_{\text{c(onset)}}$ of the tape above 114 K, at which the generation of the Pb3221 phase simultaneously occurred during annealing. The slightly increased $c$-axis length was confirmed for annealed samples. The compositional change of cations in Bi(Pb)2223 during post-annealing is believed to be responsible for the $T_{\text{c}}$ enhancement of the present system.
- 公益社団法人 応用物理学会の論文
- 2005-12-10
著者
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KATO Takeshi
Sumitomo Electric Industries, Ltd.
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SATO Ken-ichi
Sumitomo Electric Industries, Ltd.
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Shimoyama Jun-ichi
Department Of Applied Chemistry School Of Engineering University Of Tokyo
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Hayashi Kazuhiko
Sumitomo Electric Industries Ltd.
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Shimoyama Jun-ichi
Department of Applied Chemistry, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Kobayashi Shinichi
Sumitomo Electric Industries, Ltd., 1-1-3 Shimaya, Konohana-ku, Osaka 554-0024, Japan
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Yamazaki Kouhei
Sumitomo Electric Industries, Ltd., 1-1-3 Shimaya, Konohana-ku, Osaka 554-0024, Japan
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Kato Takeshi
Sumitomo Electric Industries, Ltd., 1-1-3 Shimaya, Konohana-ku, Osaka 554-0024, Japan
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