Cluster-variation-method studies on the atomic ordering in complex perovskite alloys

Article

关键词: DIELECTRIC-PROPERTIES;    CERAMICS;    DISORDER;    FERROELECTRICS;   

DOI  :  10.1103/PhysRevB.61.11918

来源: SCIE

【 摘 要 】

The atomic ordering in complex perovskite alloys is investigated by the cluster variation method. For the 1/3{111}-type ordered structure, the order-disorder phase transition is the first order, and the order parameter of the 1:2 complex perovskite reaches its maximum near x=0.25. For the 1/2{111}-type ordered structure, the ordering transition is the second order. Phase diagrams for both ordered structures are obtained. The order-disorder line obeys the linear law.

【 授权许可】

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