On the theory of phase transition in muliferroics
arXiv:0907.2048 · doi:10.1088/1742-6596/200/1/012044
Abstract
In this paper we investigate peculiarities of phase transition high-symmetry - incommensurate phase in inhomogeneous systems. We obtain the nonlinear dispersion law and then present a renormalization group analysis of phase transitions in multiferroics. We have determined the dependence of critical indices on the nonextensivity parameter of the system.