Order parameters and densities in the smectic C, smectic A and nematic phases of a liquid crystal mixture
作者:
R. Paul,
B. Jha,
D.A. Dunmur,
期刊:
Liquid Crystals
(Taylor Available online 1993)
卷期:
Volume 13,
issue 5
页码: 629-636
ISSN:0267-8292
年代: 1993
DOI:10.1080/02678299308026336
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Measurements of the orientational and translational order parameters for the nematic, smectic A and smectic C phases of a commercial liquid crystal material are reported. The order parameters have been obtained by analysis of the angular distribution of the intensity of X-rays scattered by a sample aligned by a magnetic field. Results are presented as a function of temperature, and it is found that the apparent orientational order parameter in the smectic C phase decreases with decrease in temperature. This is explained using a model of random tilt. The experimental order parameters are compared with those calculated from a mean field model.
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