Ferrielectricity in smectic-C

Mettout, B; Logbo, H Pasco; Gagou, Y; Vasseur, H; Gisse, P

Mettout, B; Logbo, H Pasco; Gagou, Y; Vasseur, H; Gisse, P.

Afiliación

Mettout B; PSC, Université de Picardie, 33 Rue Saint Leu, Amiens, France.
Logbo HP; PSC, Université de Picardie, 33 Rue Saint Leu, Amiens, France.
Gagou Y; Faculté des Sciences et Techniques de Natitingou, USATN, Natitingou, Benin.
Vasseur H; LPMC, Université de Picardie, 33 Rue Saint Leu, Amiens, France.
Gisse P; PSC, Université de Picardie, 33 Rue Saint Leu, Amiens, France.

Phys Rev E ; 93: 042704, 2016 Apr.

Article en En | MEDLINE | ID: mdl-27176363

RESUMEN

Recent experiments probing a new ferroelectric liquid crystal (CLF08) confined in cells with planar alignment have shown dielectric and optic anomalies suggesting the onset of ferrielectric ordering within the surface lattice of dechiralization lines. We present a phenomenological theory describing the corresponding phase transition sequence SmAâSmC^{*}âFerri. Phase diagrams and thermodynamic, dielectric, and optic properties are worked out and compared with experiments. The anomalies are related to the predicted tristability of the experimental cells under applied electric field. The order parameters of Landau theory are reinterpreted in terms of line positions, allowing description of the entrance and exit line behavior, and yielding the prediction and identification of new limit phases within a nonconventional Landau approach.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Qualitative_research Idioma: En Revista: Phys Rev E Año: 2016 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Estados Unidos

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