Molecular Dynamics of 4-Cyano-3-Fluorophenyl 4-Butylbenzoate as Studied by Dielectric Relaxation Spectroscopy

• Authors: M. Massalska-Arodź , J. Krawczyk , E. Juszyńska , A. Kocot , A. Inaba
• Languages of publication: EN

Abstracts

EN

Dielectric α-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 β-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.

Keywords

EN

64.70.kj; 64.70.M-; 77.22.Gm

Discipline

• 77.22.Gm: Dielectric loss and relaxation
• 64.70.kj: Glasses
• 64.70.M-: Transitions in liquid crystals

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 117
• Issue: 4
• Pages: 532-536

Dates

published

2010-04

Contributors

author

M. Massalska-Arodź

• Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland

author

J. Krawczyk

• Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland

author

E. Juszyńska

• Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland
• Research Center for Structural Thermodynamics, Osaka University, Toyonaka, Japan

author

A. Kocot

• Institute of Physics, Silesian University, Katowice, Poland

author

A. Inaba

• Research Center for Structural Thermodynamics, Osaka University, Toyonaka, Japan

References

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Identifiers

DOI

10.12693/APhysPolA.117.532