Dielectric and electrooptical responses of antiferroelectric liquid crystals in the Smectic-A phase

被引：4

作者：

Sako, T ^{[1
]}

Kimura, Y ^{[1
]}

Hayakawa, R ^{[1
]}

Okabe, N ^{[1
]}

Suzuki, Y ^{[1
]}

机构：

[1] SHOWA SHELL SEKIYU KK, CENT RES & DEV LAB, ATSUGI, KANAGAWA 24302, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1996年 / 35卷 / 2A期

关键词：

antiferroelectricity; ferroelectricity; optical purity; SmA phase; electroclinic effect; phase transition; Landau theory;

D O I：

10.1143/JJAP.35.679

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Smectic-A (SmA) phases of the antiferroelectric liquid crystals (R)-MHPOBC, (R)-MHPOCBC and slightly racemized MHPOBC (R:S=17:3) have been studied by means of simultaneous measurements of the electric displacement and the tilt angle induced by the electric field. The SmA-SmCalpha* phase transition was observed in (R)-MHPOBC and (R)-MHPOCBC, while a phase transition similar to the SmA-SmC* one was observed in slightly racemized MHPOBC. In both cases, the Landau-type phenomenological theory explains well the critical behavior in the SmA phase, and the coefficients related to the theory can be determined.

引用

页码：679 / 682

页数：4

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