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首页> 外文期刊>Crystallography reports >Influence of structural ordering on ion transport in BiO _(0.5)F_(2.0) bismuth oxyfluoride
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Influence of structural ordering on ion transport in BiO _(0.5)F_(2.0) bismuth oxyfluoride

机译:BiO _(0.5)F_(2.0)氟氧化铋中结构有序化对离子迁移的影响

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摘要

The influence of structural defect ordering on ionic conductivity (σ) in the cubic (fluorite) modification of BiO_(0.5)F_(2.0) oxyfluoride has been investigated. Upon cooling, the disordered fluorite BiO_(0.5)F_(2.0) 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 BiO_(0.5)F _(2.0). 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.
机译:研究了BiO_(0.5)F_(2.0)氟氧化物的立方(萤石)改性过程中结构缺陷有序性对离子电导率(σ)的影响。冷却后,无序的萤石BiO_(0.5)F_(2.0)相经历可逆转变为有序形式。这种转变表现为温度依赖性σ(T)在583±6 K附近的跃迁。结构缺陷的有序性恶化了BiO_(0.5)F _(2.0)中离子传输的特性。在500 K时,有序相的σ值为1×10〜(-4)S / cm,而对无序相的该温度外推得出σ= 4×10〜(-4)S / cm。

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