Model-independent structure and resonant X-ray spectra of intermediate smectic phases

Mikhail Osipov, M.V. Gorkunov

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

It is shown that the orientational structure of intermediate smectic phases can be determined using the symmetry properties of the general free energy with arbitrary orientational coupling between smectic layers, without addressing a particular model. The structure of three- and four-layer intermediate phases, obtained in this way, corresponds to experimental data. The same method enables one to predict the structure of intermediate phases with periodicity of five and six layers, which have not been observed experimentally so far. The resonant X-ray spectra of the five- and six-layer intermediate phases with predicted structure have also been calculated. These spectra are characterized by a number of features which enable one to distinguish five-layer and six-layer intermediate phases from phases with smaller periods.
LanguageEnglish
Pages1133-1141
Number of pages9
JournalLiquid Crystals
Volume33
Issue number10
DOIs
Publication statusPublished - 10 Oct 2006

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Free energy
X rays
x rays
periodic variations
free energy
symmetry

Keywords

  • liquid crystals
  • intermediate smectic phases
  • smectic layers

Cite this

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Model-independent structure and resonant X-ray spectra of intermediate smectic phases. / Osipov, Mikhail; Gorkunov, M.V.

In: Liquid Crystals, Vol. 33, No. 10, 10.10.2006, p. 1133-1141.

Research output: Contribution to journalArticle

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AB - It is shown that the orientational structure of intermediate smectic phases can be determined using the symmetry properties of the general free energy with arbitrary orientational coupling between smectic layers, without addressing a particular model. The structure of three- and four-layer intermediate phases, obtained in this way, corresponds to experimental data. The same method enables one to predict the structure of intermediate phases with periodicity of five and six layers, which have not been observed experimentally so far. The resonant X-ray spectra of the five- and six-layer intermediate phases with predicted structure have also been calculated. These spectra are characterized by a number of features which enable one to distinguish five-layer and six-layer intermediate phases from phases with smaller periods.

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