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A.model of cation ordering in A(B'_xB''_1-x)O_3 relaxors

S. Lapinskas·E. E. Tornau·A. Rosengren
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Abstract

We have shown that the lattice-gas model with four repulsive pair interaction constants (corresponding to the four nearest coordination shells) on a simple cubic lattice is a sufficient model to describe the main types of cation ordering in relaxors. The phase diagram, obtained by the cluster variation method, shows the sequences of transitions between the phases 1:2 - 1:1 - disordered and 1:2 - disordered.

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S. Lapinskas, E. E. Tornau, A. Rosengren. 2000-10-20. A.model of cation ordering in A(B'_xB''_1-x)O_3 relaxors. https://doi.org/10.1103/physrevb.63.054108

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