A resonant microwave cavity technique was employed to study the dielectric behavior of some polar and non-polar liquids near the phase transition temperatures at microwave frequencies of 7.2, 9.2 and 10.1 GHz. The Slater perturbation equations for a resonant microwave cavity are briefly discussed to show that the above technique can be used to determine both the real and imaginary parts of dielectric response. Abrupt changes in dielectric response were observed near the phase transition temperatures for the polar liquids studied in this investigation. The dielectric relaxation phenomenon in liquids has been treated as a chemical rate process and the abrupt change in the dielectric response of the liquids near phase transition temperatures is shown to be related to the dramatic changes in the free energy of activation of the molecules. Some values of the free energy of activation were deduced for the various compounds from data obtained in this investigation.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc331978 |
| Date | 08 1900 |
| Creators | Dahiya, Jai N. (Jai Narain) |
| Contributors | Roberts, James Andrew, Mackey, H. J., Duggan, Jerome L., Sears, Raymond E., Redding, Rogers W. |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | viii, 108 leaves : ill., Text |
| Rights | Public, Dahiya, Jai N. (Jai Narain), Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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