The phase-field modeling of the self-organized phase growth with three-fold symmetry

Scanning Probe Microscopy 2017

Akhmatkhanov, A.R.^1 ; Lobov, A.I.^1 ; Chuvakova, M.A.^1 ; Saveliev, E.D.^1 ; Shur, V.Ya.^1

School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg

620000, Russia^1

关键词: First-order phase transitions;    Non equilibrium;    Phase field models;    Phase-field simulation;    Polarization reversals;    Self organized growth;    Switching conditions;    Three-fold symmetry;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/256/1/012027/pdf
DOI  :  10.1088/1757-899X/256/1/012027

来源: IOP

【 摘 要 】

The formation of self-organized domain patterns during polarization reversal in highly non-equilibrium switching conditions was studied by us earlier in the single crystals of lithium niobate and lithium tantalate. In this paper, we used the phase-field simulation to verify the analogy between self-organized growth of domains and new phase during the first order phase transition. The crystal symmetry C3vwas taken into account. The similarity of simulated and experimentally observed shapes of isolated domains was achieved.