Nonlinear Dielectric Relaxation in Solutions of the Polar Mesogenic Molecules in the Isotropic Phase |
| P. Kędziora Institute of Molecular Physics, Polish Academy of Sciences Smoluchowskiego 17, 60-179 Poznań, Poland |
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| Received: April 3, 2003; in final form June 23, 2003 |
| The nonlinear spectra of 4,4'-n-hexylcyanobiphenyl (C6H13-Ph-Ph-CN) in benzene solutions were recorded in the frequency range of 300 kHz - 100 MHz in the presence of the strong static electric field E01.1x107V/m, at 25°C. The dynamic pretransitional phenomena revealed for polar C6H13-Ph-Ph-CN were interpreted in the frame of the Landau-de Gennes theory. The identical concentration-dependent behavior of nonlinear relaxation time in the vicinity of the transition from the isotropic to the nematic phase for polar and nonpolar compounds was discussed. |
| DOI: 10.12693/APhysPolA.104.45 PACS numbers: 64.70.Md, 72.20.Ht, 68.35.Rh |