Short-Range Order Fluctuation in the Isotropic Phase of Solutions of 4-trans-4'-n-dodecylcyanobiphenyl in Benzene Studied by Nonlinear Dielectric Spectroscopy

• Authors: P. Kędziora
• Languages of publication: EN

Abstracts

EN

Nonlinear dielectric spectroscopy is used to study the dynamics of the smectogenic compound 4-trans-4'-n-dodecylcyanobiphenyl in the isotropic phase as a function of its concentration in benzene. The results obtained reveal that the large, positive amplitude of the field-induced dielectric increment (Δε≈10^{-3}) and its frequency dependence observed in the nonlinear dielectric effect spectra, even far from the possible isotropic-smectic A type phase transition, are due to short range fluctuations of the electric moment. The nature of molecular formations as a result of the strong intermolecular orientational correlations is discussed.

Keywords

EN

64.70.Md; 72.20.Ht; 68.35.Rh

Discipline

• 72.20.Ht: High-field and nonlinear effects
• 68.35.Rh: Phase transitions and critical phenomena

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 107
• Issue: 6
• Pages: 907-916

Dates

published

2005-06

received

2004-09-02

(unknown)

2005-01-17

(unknown)

2005-04-13

Contributors

author

P. Kędziora

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.107.907