Structure and Mössbauer spectroscopy studies of mechanically activated (BiFeO3)1−x-(BaTiO3)x solid solutions

Malesa, Bożena; Antolak-Dudka, Anna; Oleszak, Dariusz; Pikula, Tomasz

doi:10.1515/nuka-2015-0022

Abstract

(BiFeO₃)_1-x-(BaTiO₃)_x solid solutions with x = 0.1–0.4 and 0.7 were investigated. The ceramics were prepared by mechanical activation technology and subsequent heat treatment. As was proved by X-ray diffraction, increase of BaTiO₃ concentration causes a change in the crystalline structure from the rhombohedral structure characteristic of BiFeO₃ to a cubic one. ⁵⁷Fe Mössbauer spectroscopy allowed observation of a gradual transformation from an ordered spin structure of Fe³⁺ ions to the paramagnetic state with an increase of x.

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Structure and Mössbauer spectroscopy studies of mechanically activated (BiFeO3)1−x-(BaTiO3)x solid solutions

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