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Phase Transitions, Magnetic and Piezoelectric Properties of Rare‐Earth‐Substituted BiFeO 3 Ceramics
Author(s) -
Troyanchuk Igor O.,
Karpinsky Dmitry V.,
Bushinsky Maxim V.,
Mantytskaya Olga S.,
Tereshko Nina V.,
Shut Victor N.
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04780.x
Subject(s) - ionic radius , antiferromagnetism , crystallite , polar , materials science , polarizability , phase (matter) , phase boundary , ferromagnetism , analytical chemistry (journal) , ion , condensed matter physics , chemistry , crystallography , physics , organic chemistry , astronomy , molecule , chromatography
The concentration range of the stability of polar ( R 3 c ) and antipolar phases in the Bi 1− x RE x FeO 3 (RE–La ‐ Dy) solid solutions has been determined by X‐ray study of the polycrystalline samples. Both polar and antipolar phases become less stable with a decrease of the rare earth ionic radii. It is stimulated by a reduction of the rare‐earth ions polarizability with a decrease in ionic radii. The antipolar phase is characterized by a weak ferromagnetic state, whereas the polar one exhibits dominantly antiferromagnetic behavior near the polar‐antipolar morphotropic boundary. The local piezoelectric response decreases with increase in antipolar phase content in the mixed polar‐antipolar structural state. It is suggested that the piezoelectric activity is associated with polar ( R 3 c ) phase.