Crystal Structure of the (K0.87Bi0.13)BiO3Superconductor

N. R. Khasanova; F. Izumi; T. Kamiyama; K. Yoshida; A. Yamamoto; S. Tajima

doi:10.1006/jssc.1998.8170

Crystal Structure of the (K_0.87Bi_0.13)BiO₃Superconductor

N. R. Khasanova, F. Izumi, T. Kamiyama, K. Yoshida, A. Yamamoto, S. Tajima

研究成果: Article › 査読

36 被引用数 (Scopus)

抄録

The structure of a superconducting oxide (K_0.87Bi_0.13)BiO₃(T_c≈10.2 K) prepared under high pressure was analyzed by time-of-flight neutron powder diffraction. Rietveld refinement showed this compound to be a cubic perovskiteABO₃with space groupPm3m(No. 221) and lattice parametera=4.23377(3) Å. Refinement of occupation factors revealed the absence of oxygen vacancies and the substitution of Bi³⁺ions for 13% of K⁺ions at theAsite, presenting evidence for electron doping in this superconductor. Extraordinarily large atomic displacement parameters for theAand O sites are believed to reflect pronounced positional disorder mainly arising from the large difference in size between the K⁺and Bi³⁺ions.

本文言語	English
ページ（範囲）	205-208
ページ数	4
ジャーナル	Journal of Solid State Chemistry
巻	144
号	1
DOI	https://doi.org/10.1006/jssc.1998.8170
出版ステータス	Published - 1999 4月
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
セラミックおよび複合材料
凝縮系物理学
物理化学および理論化学
無機化学
材料化学

文献へのアクセス

10.1006/jssc.1998.8170

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引用スタイル

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title = "Crystal Structure of the (K0.87Bi0.13)BiO3Superconductor",

abstract = "The structure of a superconducting oxide (K0.87Bi0.13)BiO3(Tc≈10.2 K) prepared under high pressure was analyzed by time-of-flight neutron powder diffraction. Rietveld refinement showed this compound to be a cubic perovskiteABO3with space groupPm3m(No. 221) and lattice parametera=4.23377(3) {\AA}. Refinement of occupation factors revealed the absence of oxygen vacancies and the substitution of Bi3+ions for 13% of K+ions at theAsite, presenting evidence for electron doping in this superconductor. Extraordinarily large atomic displacement parameters for theAand O sites are believed to reflect pronounced positional disorder mainly arising from the large difference in size between the K+and Bi3+ions.",

author = "Khasanova, {N. R.} and F. Izumi and T. Kamiyama and K. Yoshida and A. Yamamoto and S. Tajima",

note = "Funding Information: This work has been partly supported by New Energy & Industrial Technology Development Organization (NEDO) for Research & Development based on the Industrial Science and Technology Frontier Program. Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.",

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AU - Khasanova, N. R.

AU - Izumi, F.

AU - Kamiyama, T.

AU - Yoshida, K.

AU - Yamamoto, A.

AU - Tajima, S.

N1 - Funding Information: This work has been partly supported by New Energy & Industrial Technology Development Organization (NEDO) for Research & Development based on the Industrial Science and Technology Frontier Program. Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

PY - 1999/4

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N2 - The structure of a superconducting oxide (K0.87Bi0.13)BiO3(Tc≈10.2 K) prepared under high pressure was analyzed by time-of-flight neutron powder diffraction. Rietveld refinement showed this compound to be a cubic perovskiteABO3with space groupPm3m(No. 221) and lattice parametera=4.23377(3) Å. Refinement of occupation factors revealed the absence of oxygen vacancies and the substitution of Bi3+ions for 13% of K+ions at theAsite, presenting evidence for electron doping in this superconductor. Extraordinarily large atomic displacement parameters for theAand O sites are believed to reflect pronounced positional disorder mainly arising from the large difference in size between the K+and Bi3+ions.

AB - The structure of a superconducting oxide (K0.87Bi0.13)BiO3(Tc≈10.2 K) prepared under high pressure was analyzed by time-of-flight neutron powder diffraction. Rietveld refinement showed this compound to be a cubic perovskiteABO3with space groupPm3m(No. 221) and lattice parametera=4.23377(3) Å. Refinement of occupation factors revealed the absence of oxygen vacancies and the substitution of Bi3+ions for 13% of K+ions at theAsite, presenting evidence for electron doping in this superconductor. Extraordinarily large atomic displacement parameters for theAand O sites are believed to reflect pronounced positional disorder mainly arising from the large difference in size between the K+and Bi3+ions.

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