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
来源：
FERROELECTRICS | 2008年 / 375卷
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
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页码：56 / 58
页数：3
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