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ID 112427
著者
Muranaka, Kie Tokushima University
Hagiwara, Makoto Kyoto Institute of Technology
資料タイプ
学術雑誌論文
抄録
We investigated the effects of oxidation and reduction on the successive superconducting transition in a ceramic material composed of YBa2Cu4O8 (Y124) submicron grains by linear and non-linear resistivity measurements. This material shows two-step superconducting transition and the lower one is identified as an inter-grain ordering. A sintering process fuses and joins the adjacent grains, so the lower transition was suppressed with increasing sintered time. Although Y124 is a stoichiometric ceramic, a reduction treatment suppressed the temperature of zero resistivity and broadened the non-linear resistivity peak. This suggests an oxygen vacancy was induced on the grain surface.
掲載誌名
Journal of Physics: Conference Series
ISSN
17426596
17426588
cat書誌ID
AA12839617
出版者
IOP Publishing
871
開始ページ
012010
発行日
2017-07-26
権利情報
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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言語
eng
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出版社版
部局
理工学系
教養教育院