The influence of finite dimensions on the static ordering of the S*Cphase in an electric field

Autor:	B. Rovšek, Boštjan Žekš, B. Kutnjak-urbanc
Rok vydání:	1993
Předmět:	Materials science Field (physics) Condensed matter physics Thermodynamic equilibrium Electric field Phase (waves) General Materials Science General Chemistry Boundary value problem Optical field Condensed Matter Physics Critical field Ferroelectricity
Zdroj:	Liquid Crystals. 14:999-1005
ISSN:	1366-5855 0267-8292
DOI:	10.1080/02678299308027807
Popis:	A ferroelectric liquid-crystalline sample of a finite length along the helical axis is studied in an external electric field applied perpendicular to the helical axis. By taking into account the linear coupling to the field, the equilibrium state is found for the case of free boundary conditions. Just below the critical field which induces the transition into the homogeneous S*C phase the domain-like structure appears as in the case of an infinite sample. The helical period in a finite sample is not a continuous function of the field, but it increases in finite jumps. We show that the finiteness of the sample has also an influence on the dielectric response at zero field.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c7852fa2e0224abec785d32678dfd0d9 https://doi.org/10.1080/02678299308027807 Zobrazit plný text záznamu