Effect of cell thickness on the dielectric relaxation processes in ferroelectric liquid crystals

被引：3
|
作者：
Singh, Rajbir [1 ,2 ]
Raina, K. K. [1 ]
机构：
[1] Thapar Inst Engn & Technol, Sch Phys & Mat Sci, Mat Res Lab, Patiala 147004, Punjab, India
[2] Meerut Univ, Dept Phys, Meerut 250001, Uttar Pradesh, India
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2008年 / 22卷 / 14期
关键词：
ferroelectric liquid crystal mixture; dielectric relaxation; soft mode; domain mode;
D O I：
10.1142/S0217979208039459
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Dielectric relaxation spectroscopy in the frequency range 50 Hz to 1 MHz has been carried out in a room temperature ferroelectric liquid crystal mixture in the SmC*, SmA and N* phases in cells of different thickness. The relaxation frequency f(gamma), distribution parameter alpha and dielectric strength delta epsilon have been evaluated. Goldstone mode, domain mode and soft mode have been observed. It is found that the cell thickness has a significant effect on the dielectric parameters of the ferroelectric liquid crystal material. The results have been discussed.
引用
收藏
页码：2263 / 2273
页数：11
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