Choudhary, A. and Kaur, S. and Prakash, J. and Sreenivas, K. and Bawa, S. S. and Biradar, A. M. (2008) Effect of smectic A temperature width on the soft mode in ferroelectric liquid crystals. Journal of Applied Physics, 104 (3). 034105-1-034105-7. ISSN 1089-7550

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Abstract

The behavior of soft mode range with respect to the temperature width of smecticA (Sm A) phase has been studied in four different ferroelectricliquid crystal (FLC) materials in the frequency range 10Hz–10MHz. The studies have been carried out in a planarly well aligned cells at different temperatures and different bias fields in Sm C∗ and Sm A phases. Dielectric studies of these FLCs near Sm C∗‐Sm Aphase transition show that the temperature range of soft mode relaxation frequency phenomenon varies with the temperature width of Sm A phase. The dependence of tilt angle on temperature shows the nature of the order of transition at Sm C∗‐Sm A phase. The coupling between order parameters of Sm C∗ and Sm A phase influences the soft mode and phase transition in Sm C∗ and Sm A phases.

Item Type:	Article
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	06 Jan 2014 11:34
Last Modified:	06 Jan 2014 11:34
URI:	http://npl.csircentral.net/id/eprint/999

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