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Title: Molecular dynamics of 4-cyano-3-fluorophenyl 4-butylbenzoate as studied by dielectric relaxation spectroscopy
Authors: Massalska-Arodź, M.
Krawczyk, J.
Juszyńska, E.
Kocot, Antoni
Inaba, A.
Keywords: szkła; przejścia w ciekłych kryształach; straty i relaks dielektryczny; dynamika molekularna
Issue Date: 2010
Citation: Acta Physica Polonica A, Vol. 117, nr 4 (2010), s. 532-536
Abstract: Dielectric ®-relaxation connected with reorientations of the 4-cyano-3-fluorophenyl-4-butylbenzoate molecules around short axes in the isotropic and nematic phases is presented. In the nematic phase the super-Arrhenius temperature dependence of the relaxation has been found. Vitrification of the supercooled nematic phase is shown. Below glass transition temperature the secondary ¯-relaxation has been identified and described well by the Arrhenius temperature dependence on cooling and on heating. After softening of glass to the metastable nematic phase a spontaneous crystallization occurs as for some other low-weight molecular glass formers.
ISSN: 0587-4246
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