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Ultrasonic relaxation studies across N‐I transition in the liquid crystal p‐cyanophenyl trans‐4‐pentyl cyclohexane carboxylate
Author(s) -
Venkatacharyulu P.,
Gupta A. V. N.,
Rao J. V.
Publication year - 1988
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.2170230311
Subject(s) - cyclohexane , liquid crystal , relaxation (psychology) , carboxylate , adiabatic process , isotropy , chemistry , nuclear magnetic resonance , materials science , condensed matter physics , crystallography , thermodynamics , physics , stereochemistry , organic chemistry , optics , psychology , social psychology
The variation of ultrasonic velocity with temperature in the liquid crystal p‐cyanophenyl trans‐4‐pentyl cyclohexane carboxylate at four different fixed frequencies is studied. From the observed data relaxation parameters like adiabatic relaxation time, velocity at infinite frequency and velocity at zero frequency, in the vicinity of isotropic‐nematic transition are sutied. The relaxation mechanism is discussed.