Dielectric Spectroscopy Studies of 4-Cyano-3-fluorophenyl 4-Butylbenzoate Liquid Crystal at High Pressure
T. Rozwadowski a, M. Massalska-Arodźa, E. Juszyńska a, J. Krawczyk a, Ż. Wojnarowska b and M. Paluch b
aDepartment of Structural Research, Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland
bDepartment of Biophysics and Molecular Physics, Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
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For 4-cyano-3-fluoro-phenyl 4-butyl-benzoate, nematic glassformer at ambient pressure, dielectric relaxation studies were performed under elevated pressure. In the isobaric experiment, on cooling the nematic phase two superarrhenius α-relaxations, ascribed to the reorientations of molecules around short axes and precession of long molecular axes were found and the Arrhenius β-relaxation related to intramolecular motions. Complexity of dynamics at elevated and ambient pressure is similar. Shift towards lower frequencies was found for both α-relaxations.
DOI: 10.12693/APhysPolA.122.378
PACS numbers: 64.70.M-, 77.22.Gm