Effect of potassium addition on YBa2Cu3Ox superconductors

K. Inoue; N. Sakai; M. Murakami; I. Hirabayashi

doi:10.1016/j.physc.2006.03.093

Effect of potassium addition on YBa₂Cu₃O_x superconductors

K. Inoue, N. Sakai, M. Murakami, I. Hirabayashi

研究成果: Article › 査読

4 被引用数 (Scopus)

抄録

Long period post-annealing in the oxygen atmosphere is necessary for YBa₂Cu₃O_x (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K⁺ ion substitutes on Ba²⁺ site since the size of K⁺ ion is close to that of Ba²⁺ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset T_c of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.

本文言語	English
ページ（範囲）	128-132
ページ数	5
ジャーナル	Physica C: Superconductivity and its applications
巻	445-448
号	1-2
DOI	https://doi.org/10.1016/j.physc.2006.03.093
出版ステータス	Published - 2006 10月 1

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
エネルギー工学および電力技術
電子工学および電気工学

文献へのアクセス

10.1016/j.physc.2006.03.093

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引用スタイル

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abstract = "Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.",

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author = "K. Inoue and N. Sakai and M. Murakami and I. Hirabayashi",

note = "Funding Information: This work is partially supported by the New Energy and Industrial Technology Development Organization (NEDO). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

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AU - Sakai, N.

AU - Murakami, M.

AU - Hirabayashi, I.

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AB - Long period post-annealing in the oxygen atmosphere is necessary for YBa2Cu3Ox (Y123) bulk superconductors to impart superconductivity. We have investigated whether Y123 shows good superconductivity without oxygen annealing by potassium addition. If K+ ion substitutes on Ba2+ site since the size of K+ ion is close to that of Ba2+ ion, we can expect hole doping effect without additional oxygen annealing. We confirmed that the sample without potassium addition exhibited no superconductivity, while the sample with potassium addition had the onset Tc of above 90 K. This implies that the potassium addition certainly promotes the superconductivity of Y123.

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