Open AccessThe complex oxides with octahedral structures: Existence areas and phase transitions
Author(s) -
G. A. Geguzina
Publication year - 2020
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x20600139
Subject(s) - antiferroelectricity , tetragonal crystal system , octahedron , materials science , perovskite (structure) , phase transition , ferroelectricity , tungsten , phase (matter) , condensed matter physics , crystallography , chemical physics , crystal structure , dielectric , physics , metallurgy , chemistry , optoelectronics , quantum mechanics
The experimental and calculated data on the existence of complex oxides in solid state with the octahedral structures of four families, namely perovskites, Bi-containing layered perovskite-like ones, tetragonal tungsten bronzes and pyrochlores, and about their phase transitions are systematized and summarized on the basis of the quasi-elastic or geometric models of these structures. It has been established that similar existence areas and similar correlations between the interatomic bond strains in their structures, on the one hand, and the temperatures of their ferroelectric or antiferroelectric phase transitions, on the other hand, are observed for all of them, despite the differences in the compositions and structures of these oxides, but taking into account their similar parameters.