PHASE-TRANSITIONS AMONG PARAELECTRIC, FERROELECTRIC, FERRIELECTRIC AND ANTIFERROELECTRIC PHASES IN A CHIRAL SMECTIC LIQUID-CRYSTAL

被引：42

作者：

LEE, J ^{[1
]}

OUCHI, Y ^{[1
]}

TAKEZOE, H ^{[1
]}

FUKUDA, A ^{[1
]}

WATANABE, J ^{[1
]}

机构：

[1] TOKYO INST TECHNOL, DEPT POLYMER CHEM, MEGURO KU, TOKYO 152, JAPAN

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷

关键词：

D O I：

10.1088/0953-8984/2/S/040

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Phase transitions among paraelectric, ferroelectric, ferrielectric and antiferroelectric phases in a chiral smectic liquid crystal, MHPOBC, have been investigated by means of circular dichroism (CD). It was found that the helix undergoes a complex variation through the transitions such as discontinuous jumps and handedness change. By considering the twisting power, the ferrielectric phase was found to be composed of ferroelectric and antiferroelectric structures in the ratio of 3:7. The finite induced CD signal in SmC-alpha-* and SmA in the vicinity of the transition point suggests the helical structure in these phases.

引用

页码：SA271 / SA274

页数：4

共 12 条

[1] NOVEL PHASES EXHIBITING TRISTABLE SWITCHING
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[7] OBSERVATION OF 3 SUBPHASES IN SMECTIC C-STAR OF MHPOBC BY DIELECTRIC MEASUREMENTS
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[8] TEMPORAL AND SPATIAL-BEHAVIOR OF THE FIELD-INDUCED TRANSITION BETWEEN ANTIFERROELECTRIC AND FERROELECTRIC PHASES IN CHIRAL SMECTICS
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