Observation of a frustrated phase in mixtures of ferroelectric and antiferroelectric liquid crystals

被引：36

作者：

Gorecka, E

Pociecha, D

Glogarova, M

Mieczkowski, J

机构：

[1] Univ Warsaw, Dept Chem, PL-02089 Warsaw, Poland

[2] Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.81.2946

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Continuous evolution of polar properties from ferro- to antiferro- has been observed in binary mixtures of compounds having antiferroelectric and ferroelectric phases. The dielectric constant in the antiferroelectriclike smectic phase increases continuously upon increasing the ferroelectric component concentration. The variations of antiferroelectric phase properties could be attributed to changes of the azimuthal tilt angle correlations, which result in frustration between antiferroelectric and ferroelectric interactions and formation of clusters of both phases. A strong difference between dielectric susceptibilities of zero-field-cooled and field-cooled samples was observed in a frustrated phase.

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页码：2946 / 2949

页数：4

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