ON THE EXISTENCE OF TWO FERRIELECTRIC PHASES IN ANTIFERROELECTRIC LIQUID CRYSTALS

被引：17

作者：

Gisse, P. ^{[1
]}

Lorman, V. L. ^{[1
]}

Pavel, J. ^{[1
]}

Nguyen, H. T. ^{[2
]}

机构：

[1] Univ Picardie, Lab Phys Matiere Condensee, F-80039 Amiens, France

[2] Ctr Rech Paul Pascal, F-33600 Pessac, France

来源：

FERROELECTRICS | 1996年 / 178卷

关键词：

D O I：

10.1080/00150199608008370

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The optical rotatory power (ORP) has been measured as a function of the temperature for the antiferroelectric liquid crystal tolan C10 and C8, which respectively show in DSC measurements one and two ferrielectric phases. At the transition from the ferroelectric phase to the antiferroelectric one, it has been observed a change in the sign of the ORP for three different wavelenghts. These observations occur inside the ferrielectric phases, where the variations of the ORP as a function of the temperature are discussed as the consequence of the existence of different isostructural helicoidal ferrielectric phases.

引用

页码：297 / 309

页数：13

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