Perovskite oxide

In ABO₃ type oxide, of the cation A is same size as oxygen anion, the solid can become perovskite structure. The cation A and oxigen anion become close-packed hexagonal lattice in the perovskite structure. The cation B occupys 6 coordination site around only oxigen anions. The perovskite structure varies flexible. It can be unspecified compound through oxygen lack and layer structure,which is very convenient for designing materials having various functional properties. Therefore, we expect the progress investigation of perovskite structure and phisicallity. Source: Bulletin of the Japan Institute of Metals, Vol. 26, No. 8 (1987) 771

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