ID | 61297 |
フルテキストURL | |
著者 |
Li, Huan
Research Institute for Interdisciplinary Science, Okayama University
Wang, Yanan
Research Institute for Interdisciplinary Science, Okayama University
Nishiyama, Saki
Research Institute for Interdisciplinary Science, Okayama University
Yang, Xiaofan
Research Institute for Interdisciplinary Science, Okayama University
Taguchi, Tomoya
Research Institute for Interdisciplinary Science, Okayama University
Miura, Akari
Research Institute for Interdisciplinary Science, Okayama University
Suzuki, Ai
Research Institute for Interdisciplinary Science, Okayama University
Zhi, Lei
Research Institute for Interdisciplinary Science, Okayama University
Goto, Hidenori
Research Institute for Interdisciplinary Science, Okayama University
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Eguchi, Ritsuko
Research Institute for Interdisciplinary Science, Okayama University
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Liao, Yen-Fa
National Synchrotron Radiation Research Center
Ishii, Hirofumi
National Synchrotron Radiation Research Center
Kubozono, Yoshihiro
Research Institute for Interdisciplinary Science, Okayama University
ORCID
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抄録 | A superconducting KBi2 sample was successfully prepared using a liquid ammonia (NH3) technique. The temperature dependence of the magnetic susceptibility (M/H) showed a superconducting transition temperature (Tc) as high as 3.6 K. In addition, the shielding fraction at 2.0 K was evaluated to be 87%, i.e., a bulk superconductor was realized using the above method. The Tc value was the same as that reported for the KBi2 sample prepared using a high-temperature annealing method. An X-ray diffraction pattern measured based on the synchrotron X-ray radiation was analyzed using the Rietveld method, with a lattice constant, a, of 9.5010(1) Å under the space group of Fd[3 with combining macron]m (face-centered cubic, no. 227). The lattice constant and space group found for the KBi2 sample using a liquid NH3 technique were the same as those reported for KBi2 through a high-temperature annealing method. Thus, the superconducting behavior and crystal structure of the KBi2 sample obtained in this study are almost the same as those for the KBi2 sample reported previously. Strictly speaking, the magnetic behavior of the superconductivity was different from that of a KBi2 sample reported previously, i.e., the KBi2 sample prepared using a liquid NH3 technique was a type-II like superconductor, contrary to that prepared using a high-temperature annealing method, the reason for which is fully discussed. These results indicate that the liquid NH3 technique is effective and simple for the preparation of a superconducting KBi2. In addition, the topological nature of the superconductivity for KBi2 was not confirmed.
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発行日 | 2020-07-16
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出版物タイトル |
RSC Advances
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巻 | 10巻
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号 | 45号
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出版者 | Royal Society of Chemistry
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開始ページ | 26686
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終了ページ | 26692
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ISSN | 2046-2069
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | © The Royal Society of Chemistry
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論文のバージョン | publisher
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DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1039/D0RA04541A
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ライセンス | https://creativecommons.org/licenses/by/3.0/
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助成機関名 |
文部科学省
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助成番号 | 17K05500
18K04940
18K18736
19H02676
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