Transformations of Space-Modulated Structures in BiFeO3 – Like Multiferroics

Zukhra V. Gareeva; Anatoly F. Popkov; Sergey V. Soloviov; Anatoly K. Zvezdin

doi:10.4028/www.scientific.net/SSP.215.495

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Transformations of Space-Modulated Structures in BiFeO₃ – Like Multiferroics

Abstract:

The influence of variations of magnetic parameters on the transformations of antiferromagnetic space – modulated structure in BiFeO₃ – like multiferroics is investigated. The specificity of variations of magnetic parameters of different origin namely the magnetic anisotropy, the stiffness, the lattice mismatch between multiferroics film and oriented substrate which can change the conditions of space-modulated structures emergence and the character of space – modulated structures transformations in bulk crystals and thin films is discussed. Threshold parameters of phase transitions between cycloidal structures and homogeneous magnetic states have been found out. It has been shown that plane cycloid can be transformed into conical state during the transition from incommensurate phase into homogeneous phase.