<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Low frequency dielectric relaxation has been reported for a nematic liquid crystal in the frequency range of 1 kHz to 10 MHz and in the temperature range from 25 °C to 100 °C. The optical behaviour has also been studied by measuring the refractive indices, birefringence and optical transmittance in the temperature range mentioned above. The birefringence data have been used to calculate the order parameter by Vuks’ approach, and its variation with temperature has been discussed. Transition temperatures obtained using different techniques are found to be in good agreement with each other.</p></abstract>

Low frequency dielectric relaxation has been reported for a nematic liquid crystal in the frequency range of 1 kHz to 10 MHz and in the temperature range from 25 °C to 100 °C. The optical behaviour has also been studied by measuring the refractive indices, birefringence and optical transmittance in the temperature range mentioned above. The birefringence data have been used to calculate the order parameter by Vuks’ approach, and its variation with temperature has been discussed. Transition temperatures obtained using different techniques are found to be in good agreement with each other.

Low frequency dielectric relaxation and optical behaviour of a nematic liquid crystal 4-methyl n (2′-hydroxy, 4′-n-hexadecyloxy) azobenzene

Department of Physics, Integral University, Lucknow, 226026, U.P., India

Department of Physics, RML Awadh University, Faizabad, U. P., India

Department of Physics, University of Lucknow, Lucknow, 226007, U. P., India

Department of Applied Chemistry, M. S. University of Baroda, P.B. No.-51, Kalabhavan, Vadodara, 390001, Gujrat, India

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Low frequency dielectric relaxation has been reported for a nematic liquid crystal in the frequency range of 1 kHz to 10 MHz and in the temperature range from...

Low frequency dielectric relaxation and optical behaviour of a nematic liquid crystal 4-methyl n (2′-hydroxy, 4′-n-hexadecyloxy) azobenzene

Published Online: Sep 14, 2012

Page range: 290 - 296

DOI: https://doi.org/10.2478/s13536-012-0037-9

Keywords
nematics, dielectrics, order parameter, phase transition

© 2012 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Low frequency dielectric relaxation and optical behaviour of a nematic liquid crystal 4-methyl n (2′-hydroxy, 4′-n-hexadecyloxy) azobenzene

Published Online: Sep 14, 2012

Page range: 290 - 296

DOI: https://doi.org/10.2478/s13536-012-0037-9

Keywordsnematics, dielectrics, order parameter, phase transition

© 2012 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
nematics, dielectrics, order parameter, phase transition