Anomalous Dielectric Spectra of Ferro- and Ferrielectric Liquid Crystalline Phase in MHPNBC |
| F. Dubois a, R. Douali a, A.I. Wawrzyniak b, Ch. Legrand a, P. Ropa a, S. Wróbel b and R. Dąbrowski c
aLaboratoire d'Etude des Matériaux et des Composants pour l'Electronique E.A. 2601, Université du Littoral, côte d'Opale, 50 rue Ferdinand Buisson, Extension Bâtiment B, 2ème étage, B.P. 717, 62228 Calais, France bInstitute of Physics, Jagiellonian University, W.S. Reymonta 4, 30-059 Kraków, Poland cInstitute of Chemistry, Military University of Technology, S. Kaliskiego 2, 01-489 Warszawa, Poland |
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| MHPOBC analogue with long achiral alkyl chain has been investigated by dielectric spectroscopy studies in the wide temperature range. Low frequency dielectric spectroscopy revealed the existence of normal ferroelectric phase (in a narrow gap), two ferri- and three antiferroelectric phases in addition to paraelectric phase and alpha sub-phase. The compound studied shows exceptionally strong dependence of the dielectric permittivities on measuring electric field in the temperature range of ferro- and ferrielectric phases. |
DOI: 10.12693/APhysPolA.124.937 PACS numbers: 77.22.Gm, 77.84.Nh, 64.70.M |