Landau Theory of Nematic-Smectic-A Transition in a Liquid Crystal Mixture
作者:
PrabirK. Mukherjee,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 312,
issue 1
页码: 157-164
ISSN:1058-725X
年代: 1998
DOI:10.1080/10587259808042438
出版商: Taylor & Francis Group
关键词: Nematic phase;smectic phase;phase transition
数据来源: Taylor
摘要:
Binary mixtures of HBAB {p-[(p-hexyloxy-benzylidene)-amino] benzonitrile} and CBOOA [N-p-cyanibenzylidene-p-n-octyloxyaniline] exhibit a two phase region where both smectic-A and nematic phase coexists. The reason for this two phase region is discussed by means of Landau formalism. The problem of the first or second order nature of the nematic-smectic-A phase transition is explored. General Landau theory for coupled orientational, translational order parameters and concentration is developed.
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