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

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

Research output: Contribution to journalArticle

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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) 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.

Original languageEnglish
Pages (from-to)205-208
Number of pages4
JournalJournal of Solid State Chemistry
Volume144
Issue number1
DOIs
Publication statusPublished - 1999 Apr
Externally publishedYes

Fingerprint

Crystal structure
Ions
crystal structure
ions
Rietveld refinement
Neutron powder diffraction
Oxygen vacancies
occupation
Oxides
Superconducting materials
Substitution reactions
Doping (additives)
disorders
substitutes
neutrons
oxides
Electrons
oxygen
diffraction
electrons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Khasanova, N. R., Izumi, F., Kamiyama, T., Yoshida, K., Yamamoto, A., & Tajima, S. (1999). Crystal Structure of the (K0.87Bi0.13)BiO3Superconductor. Journal of Solid State Chemistry, 144(1), 205-208. https://doi.org/10.1006/jssc.1998.8170

Crystal Structure of the (K0.87Bi0.13)BiO3Superconductor. / Khasanova, N. R.; Izumi, F.; Kamiyama, T.; Yoshida, K.; Yamamoto, Ayako; Tajima, S.

In: Journal of Solid State Chemistry, Vol. 144, No. 1, 04.1999, p. 205-208.

Research output: Contribution to journalArticle

Khasanova, NR, Izumi, F, Kamiyama, T, Yoshida, K, Yamamoto, A & Tajima, S 1999, 'Crystal Structure of the (K0.87Bi0.13)BiO3Superconductor', Journal of Solid State Chemistry, vol. 144, no. 1, pp. 205-208. https://doi.org/10.1006/jssc.1998.8170
Khasanova, N. R. ; Izumi, F. ; Kamiyama, T. ; Yoshida, K. ; Yamamoto, Ayako ; Tajima, S. / Crystal Structure of the (K0.87Bi0.13)BiO3Superconductor. In: Journal of Solid State Chemistry. 1999 ; Vol. 144, No. 1. pp. 205-208.
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