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Structural Transitions and Related Electronic Properties in Ba1-xKxBiO3

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Advances in Superconductivity V

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Abstract

Features of a cubic-to-orthorhombic transition in Ba1-xKxBiO3 with 0.1 < x ≤ 0.5 have been examined by means of electron diffraction. As a result, the structural transition was found to be due to the condensation of the R25 mode at the R point in reciprocal space. Atomic displacements involved in the orthorhombic structure are then characterized as a rotation of an oxygen octahedron about two <100> directions with the same rotation angles. In addition, a magnitude of a band gap observed in the orthorhombic phase, which exhibits a semiconducting property, can be explained on the basis of the present results; that is, the transition due to the R25 mode.

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Author information

Authors and Affiliations

  1. Kagami Memorial Laboratory for Material Science and Technology, Waseda University, Shinjuku-ku, Tokyo, 169, Japan

    Shu-Ichi Nakamura & Yasumasa Koyama

  2. Nissan ARC Ltd., Yokosuka, Kanagawa, 237, Japan

    Yasuhide Inoue

Authors
  1. Shu-Ichi Nakamura
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  2. Yasumasa Koyama
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  3. Yasuhide Inoue
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Editor information

Editors and Affiliations

  1. Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611, Japan

    Yoshichika Bando

  2. Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo, 135, Japan

    Hisao Yamauchi

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© 1993 Springer-Verlag Tokyo

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Nakamura, SI., Koyama, Y., Inoue, Y. (1993). Structural Transitions and Related Electronic Properties in Ba1-xKxBiO3 . In: Bando, Y., Yamauchi, H. (eds) Advances in Superconductivity V. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68305-6_83

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  • DOI: https://doi.org/10.1007/978-4-431-68305-6_83

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68307-0

  • Online ISBN: 978-4-431-68305-6

  • eBook Packages: Springer Book Archive

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