Incommensurate Phases Induced by Electric Field. Case of Ferroelectric Phase Transitions

被引:0
|
作者
Sannikov, D. G. [1 ]
机构
[1] Russian Acad Sci, Inst Crystallog, Moscow 119333, Russia
基金
俄罗斯基础研究基金会;
关键词
Ferroelectric phase transition; incommensurate phase; electric field;
D O I
10.1080/00150190802437886
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We shall consider a proper ferroelectric phase transition. The x and y components P-1 and P-2 of the polarization vector Pi are the order parameter. We assume that this parameter is transformed according to two-dimensional physically irreducible representation (i.e. mathematically reducible to two complex-conjugate representations). External electric field E-3 E, which is directed along the principal axis of the crystal, induces the Lifshitz invariant (IL-invariant). This invariant has the form
引用
收藏
页码:56 / 58
页数:3
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