Phase Transition Studies of the Liquid Crystal Pentyloxybenzylidene Phenylazoaniline | Zendy

Rao K. R. K. | Zendy; Rao J. V. | Zendy; Venkatacharyulu P. | Zendy; Baliah V. | Zendy

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Phase Transition Studies of the Liquid Crystal Pentyloxybenzylidene Phenylazoaniline

Author(s) -

Rao K. R. K.,

Rao J. V.,

Venkatacharyulu P.,

Baliah V.

Publication year - 1986

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.2170210616

Subject(s) - liquid crystal , compressibility , phase transition , isotropy , adiabatic process , ultrasonic sensor , materials science , condensed matter physics , phase (matter) , thermodynamics , chemistry , optics , physics , organic chemistry , acoustics

Phase transition studies of the liquid crystal pentyloxybenzylidene phenylazoaniline are investigated with density and ultrasonic velocity measurements. The density variation with temperature confirms that the isotropic liquid‐nematic, nematic‐smectic A and smectic A‐smectic B transitions are of first order. The temperature variation of ultrasonic velocity confirms all the phase transitions. The adiabatic compressibility (β ad ), Rao number ( R n ) and Molar compressibility ( B ) are estimated from density and ultrasonic velocity.

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