Electro-optical Kerr effect of nematic mixtures comprised of 6CHBT and 6BOBT |
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| Authors: | H Tajalli A Ghanadzadeh H Khoshsima P Zhalefar |
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| Institution: | (1) Center of Applied Physics and Astronomy, Tabriz University, Tabriz, Iran;(2) Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran |
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| Abstract: | Static Kerr effect and the pre-transition temperature were investigated for the 6CHBT, 6BOBT and the nematic mixtures, M1 (40% 6CHBT: 60% 6BOBT), M2 (30% 6CHBT: 70% 6BOBT) and M3 (20% 6CHBT: 80% 6BOBT) at temperatures above the nematic-isotropic transition temperature. The linear dependence of (T-T*)−1 on the Kerr constant is found to be in good agreement with the predications of the Landau-De Gennes model. The hypothetical
second order phase transition temperatures and susceptibility values were determined for these compounds. |
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| Keywords: | liquid crystals nematic mixture electro-optic Kerr effect electric birefringence pre-transition behaviour |
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