Interpretation of Thermodynamic Derivatives Near the Liquid Crystal Phase Transition inp-Azoxyanisole
- 1 May 1970
- journal article
- research article
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 10 (1-2), 21-29
- https://doi.org/10.1080/15421407008083483
Abstract
A general theory of phase transitions described by a sigle order parameter is applied to the nematic liquid crystal PAA. From previously published results on expansivity, sound velocity, and specific heat, it is shown for the nematic-isotropic phase transition in this substance (a) the coexistence curve is a curve of constant order parameter, and (b) the order parameter slightly below the transition is a function of V 4.3 T, where V is volume and T is temperature.Keywords
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