Dielectric permittivity in the isotropic phase above the isotropic to smectic-A phase transition

We use a phenomenological model to find theoretically the temperature dependence of the static dielectric permittivity at the isotropic to smectic-A phase transition. The temperature dependence of the static dielectric permittivity is presented for the isotropic and smectic-A phases of the transitio...

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Bibliographic Details
Published inPhysics letters. A Vol. 377; no. 37; pp. 2436 - 2439
Main Author Mukherjee, Prabir K.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 08.11.2013
Subjects
Dielectric constant
Dielectric permittivity
Liquid crystal
Phase transition
Liquid crystal
Dielectric permittivity
Phase transition
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Summary:We use a phenomenological model to find theoretically the temperature dependence of the static dielectric permittivity at the isotropic to smectic-A phase transition. The temperature dependence of the static dielectric permittivity is presented for the isotropic and smectic-A phases of the transition. Eventually, a comparison is made with experimental data available in the isotropic phase above the isotropic to smectic-A phase transition. We finally conclude that the model provides a good description of all known features of the static dielectric permittivity in the isotropic phase above the phase transition. •Landau fluctuation theory of the dielectric permittivity of the I-SmA transition is described.•The analytical expression of the dielectric permittivity is calculated.•Theoretical results are compared with experimental results.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2013.07.028