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Influence of structural ordering on ion transport in BiO0.5F2.0 bismuth oxyfluoride

  • Physical Properties of Crystals
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Abstract

The influence of structural defect ordering on ionic conductivity (σ) in the cubic (fluorite) modification of BiO0.5F2.0 oxyfluoride has been investigated. Upon cooling, the disordered fluorite BiO0.5F2.0 phase undergoes a reversible transition to an ordered form. This transition manifests itself as a jump in the temperature dependence σ(T) near 583 ± 6 K. The ordering of structural defects deteriorates the characteristics of ion transport in BiO0.5F2.0. At 500 K, the σ value for the ordered phase is 1 × 10−4 S/cm, whereas an extrapolation to this temperature for the disordered phase gives σ = 4 × 10−4 S/cm.

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Authors and Affiliations

  1. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskiĭ pr. 59, Moscow, 119333, Russia

    N. I. Sorokin & B. P. Sobolev

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  1. N. I. Sorokin
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  2. B. P. Sobolev
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Correspondence to N. I. Sorokin.

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Original Russian Text © N.I. Sorokin, B.P. Sobolev, 2010, published in Kristallografiya, 2010, Vol. 55, No. 5, pp. 880–882.

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Sorokin, N.I., Sobolev, B.P. Influence of structural ordering on ion transport in BiO0.5F2.0 bismuth oxyfluoride. Crystallogr. Rep. 55, 830–832 (2010). https://doi.org/10.1134/S1063774510050202

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