Interatomic Bond Strains in Binary Perovskites Structure and Their Phase Transition Temperatures
The ferro-, antiferroelectric and rotational phase transitions of known binary perovskite structure oxides ( AB O ) and fluorites ( AB F ) have been considered. Some correlations between their phase transition temperature values, on the one hand, and the interatomic bond А-X (X-O or F) strain values, on the other hand, have been constructed. It has been established that the known perovskite structure binary oxides and fluorites with different phase transition nature, caused of a lot of their composition and structure factors, are conditioned, among another, by the interatomic bond А-X strains in their structure.