Physical properties of components of mixture with induced Sm CA* phase

Jolanta Rutkowska; Pawel Perkowski; Jerzy Kedzierski; Zbigniew Raszewski; Roman S. Dabrowski; S. Gauza; Krzysztof L. Czuprynski; Emilia Miszczyk

doi:10.1117/12.385666

12 May 2000 Physical properties of components of mixture with induced Sm C_A* phase

Jolanta Rutkowska, Pawel Perkowski, Jerzy Kedzierski, Zbigniew Raszewski, Roman S. Dabrowski, S. Gauza, Krzysztof L. Czuprynski, Emilia Miszczyk

Author Affiliations +

Proceedings Volume 4147, Liquid Crystals: Chemistry, Physics, and Applications; (2000) https://doi.org/10.1117/12.385666
Event: XIII International Conference on Liquid Crystals: Chemistry, Physics, and Applications, 1999, Krynica Zdroj, Poland

Abstract

The aim of our work was the investigating of compounds not having SmC_A* phase, but in their mixtures for some concentration ranges induced smectic SmC_A* was observed. Physical macroscopic properties such as temperature dependencies of the spontaneous polarization P_S, the tilt angle (theta) and the electric permittivity (epsilon) _{(perpendicular}) were measured for three compounds and their mixture. The investigated mixture exhibited antiferroelectric order in a broad concentration range. The large thermal hysteresis of the transition between ferroelectric and antiferroelectric phases for this mixture was demonstrated using dielectric method. We have tried to explain the origin of the induced SmC_A* phase on the basis of the molecular structure of molecules of investigated compounds obtained from theoretical study by using semi-empirical quantum mechanical calculations method MINDO/3.

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Jolanta Rutkowska, Pawel Perkowski, Jerzy Kedzierski, Zbigniew Raszewski, Roman S. Dabrowski, S. Gauza, Krzysztof L. Czuprynski, and Emilia Miszczyk "Physical properties of components of mixture with induced Sm C_A* phase", Proc. SPIE 4147, Liquid Crystals: Chemistry, Physics, and Applications, (12 May 2000); https://doi.org/10.1117/12.385666

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