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Permittivity; microwaves; relaxation times; 4n-ethylphenol; methanol; binary mixtures

The dielectric relaxation studies of 4-ethylphenol-methanol mixtures have been carried out at various temperatures ranging from 10°C to 40°C using time domain reflectometry in the frequency range 10 MHz to 10 GHz. The relaxation mechanism in these systems is explained by Cole-Davidson model. The excess dielectric parameters, Kirkwood correlation factor and activation energy have been calculated and discussed with respect to molecular arrangements, and microdynamics of the binary mixture composed of both the associative type of liquids.

R H Fattepur¹ M T Hosamani² D K Deshpande³ R L Patil³ S C Mehrotra⁴

1. Basaveshwar Science College, Bagalkot - 587101, India
2. P. C. Jabin Science College, Hubli, India
3. Department of Physics, Karnatak University, Dharwad - 580003, India
4. Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad - 431004, India

Published

January 1995

Manuscript received

13 July 1994

Manuscript revised

29 October 1994