Crystallography Reports

, Volume 55, Issue 5, pp 830–832 | Cite as

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

  • N. I. SorokinEmail author
  • B. P. Sobolev
Physical Properties of Crystals


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.


Crystallography Report Oxyfluoride Fluorite Phase Fluorite Type Fluorite Type Struc Ture 
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© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  1. 1.Shubnikov Institute of CrystallographyRussian Academy of SciencesMoscowRussia

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