New High Frequency Dielectric Mode in Fluorinated Antiferroelecteric Liquid Crystals

Autor:	Jolanta Rutkowska, Wiktor Piecek, Magdalena Zurowska, Xiao Wei Sun, K. Ogrodnik, Roman Dabrowski, Jerzy Kedzierski, Paweł Perkowski, Zbigniew Raszewski
Rok vydání:	2008
Předmět:	Permittivity Materials science business.industry Mode (statistics) Dielectric Soft modes Low frequency Condensed Matter Physics Molecular physics Electronic Optical and Magnetic Materials Optics Liquid crystal Antiferroelectricity Molecule business
Zdroj:	Ferroelectrics. 365:88-94
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150190802063666
Popis:	The promising materials for applications are Antiferroelectric Liquid Crystals. Two dielectric modes were detected in AFLCs, as far [1, 2]. Low frequency mode called P L with the relaxation frequency around 100 Hz as well as high frequency mode called P H with the relaxation frequency around 100 kHz. The first (P L ) is related to in-phase motions of molecules on the cone surface (when two neighbouring layers are taken into account) while the second (P H ) is related to anti-phase motions of molecules on the cone surface. In recently synthesized fluorinated liquid crystals we detected new high frequency dielectric mode. We called it X-mode. Relaxation frequency is around 1–100 MHz and changes with the temperature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bdd30bd575d16a7d0c416beb983fede1 https://doi.org/10.1080/00150190802063666 Zobrazit plný text záznamu