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Coherent vibrations in percolative oil-resin systems: A Böse condensation effect observed by the technique of thermostimulated currents

Published online by Cambridge University Press:  31 January 2011

O. Pagès ,
M. Grimau ,
A. Lamure ,
A. Zaoui  and
B. Legendre
O. Pagès*
Affiliation:
Institut de Physique, Université de Metz, 1Bd Arago, 57078 Metz Cedex 3, France
M. Grimau
Affiliation:
Departemento de Fisica, Universidad Simon Bolivar, 89000 Caracas, Venezuela
A. Lamure
Affiliation:
Groupe de Physique des Polymères, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex, France
A. Zaoui
Affiliation:
Institut de Physique, Université de Metz, 1Bd Arago, 57078 Metz Cedex 3, France and Department of Physics, University of Sidi-Bel-Abbes, 22000 Sidi Bel-Abbes, Algeria
B. Legendre
Affiliation:
Laboratoire de Chimie-Physique Minérale et Bioinorganique, Faculté de Pharmacie, Université d'Orsay, 5 rue J.B. Clément, 92296 Châtenay-Malabry, France
*
a)Address all correspondence to this author. e-mail: pages@ipc.sciences.univ-metz.fr
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Abstract

The analysis of thermostimulated currents by the fractional polarization procedure is used to understand percolative behaviors in conductor-insulator-like oil-resin mixtures. On the fundamental side oil-poor systems are particularly attractive. They offer for the first time the opportunity to apply a pure Debye-like dielectric treatment of the quasi-elastic dipolar relaxation since the involved dipoles are independent, associated with spatially separated bounded clusters. An unusual compensation phenomenon is observed in the sense that first it does not describe hierarchically correlated motions and secondly it is related to the conducting phase but exhibits characteristics of the insulating phase. This compensation phenomenon is interpreted within the framework of Fröhlich's approach of relaxation processes in biological materials, as significative of a coherent vibration resulting from Böse condensation effects. On the practical side, the surveillance of this compensation phenomenon appears to be a new way to follow the coalescence of conducting bounded clusters with aging.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 2 , February 1999 , pp. 606 - 614
Copyright
Copyright © Materials Research Society 1999

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References

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