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The mean field model with P-2 theta(2) coupling for the smectic A-smectic C* phase transition in liquid crystals
Date
1998-01-01
Author
Salihoglu, S
Yurtseven, Hasan Hamit
Giz, A
Kayisoglu, D
Konu, A
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Using mean field theory with a P(2)theta (2) coupling term in the free energy expansion, we calculate the polarization as a function of temperature for the smectic A-smectic C* phase transition in a liquid crystalline material. Our calculated polarization values are in good agreement with the experimental data.
Subject Keywords
Instrumentation
,
General Materials Science
URI
https://hdl.handle.net/11511/57856
Journal
PHASE TRANSITIONS
DOI
https://doi.org/10.1080/01411599808222126
Collections
Department of Physics, Article
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We show here the correlations between the volume changes and the vibrational frequencies of the disorder-induced Raman modes of NH4Cl near the lambda-phase transitions of first order (P=0), tricritical (P similar or equal to 1.6 kbar) and second order (P similar or equal to 2.8 kbar). We obtain the values of the mode Gruneisen parameter for each phonon across the lambda-phase transitions and use them to predict the Raman frequencies for the phonon modes studied as functions of temperature in the lambda-phas...
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S. Salihoglu, H. H. Yurtseven, A. Giz, D. Kayisoglu, and A. Konu, “The mean field model with P-2 theta(2) coupling for the smectic A-smectic C* phase transition in liquid crystals,”
PHASE TRANSITIONS
, pp. 259–270, 1998, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57856.