Landau expansion coefficients related to second order SmA-SmC* transition for ferroelectric liquid crystal mixtures composed from achiral matrix and chiral dopants

Autor:	Wolfgang Haase, Kanchan Saxena, Lev M. Blinov, Leonid A. Beresnev
Rok vydání:	1997
Předmět:	Materials science Dopant Condensed matter physics Liquid crystal Impurity Surface force Condensed Matter Physics Polarization (waves) Ferroelectricity Landau theory Electronic Optical and Magnetic Materials Pyroelectricity
Zdroj:	Ferroelectrics. 200:37-49
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150199708008595
Popis:	Temperature dependence of the tilt angle, polarization and capacitance has been studied in three different FLC-mixtures and various cell thicknesses and the Landau expansion coefficients α and b have been determined. It has been found that these parameters are considerably affected by the thickness of the samples and smaller values of apparent Landau expansion coefficients have been obtained in the case of thin samples. This effect has been attributed to the surface forces action.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ad6e59e6f38683edbfa7eaf129ee2a93 https://doi.org/10.1080/00150199708008595 Zobrazit plný text záznamu