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Phase transition studies in the liquid crystal p‐cyanophenyl trans‐4‐pentylcyclohexane carboxylate
Author(s) -
Gupta A. V. N.,
Rao J. V.,
Prasad N. V. L. N.,
Venkatacharyulu P.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170220810
Subject(s) - compressibility , intermolecular force , van der waals force , carboxylate , adiabatic process , phase transition , thermodynamics , liquid crystal , crystal (programming language) , chemistry , materials science , crystallography , stereochemistry , molecule , physics , organic chemistry , optoelectronics , computer science , programming language
Investigations on specific volume and ultrasonic velocity measurements (at four different fixed frequencies) as a function of temperature are carried out in the liquid crystal p‐cyanophenyl trans‐4‐pentylcyclohexane carboxylate. From these studies various physical parameters like adiabatic compressibility, molar sound velocity, molar compressibility, van der Waals constant and intermolecular free lengths are evaluated. The variation of the order parameter with temperature at the four different fixed frequencies is also studied and the results are discussed.