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

wThe analysis of thermostimulated currents by the fractional polarization p rocedure is used to understand percolative behaviors in conductor-insulator -like oil-resin mixtures. On the fundamental side oil-poor systems are part icularly attractive. They offer fur the first time the opportunity to apply a pure Debye-like dielectric treatment of the quasi-elastic dipolar relaxa tion 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 moti ons and secondly it is related to the conducting phase but exhibits charact eristics of the insulating phase. This compensation phenomenon is interpret ed within the framework of Frohlich's approach of relaxation processes in b iological materials, as significative of a coherent vibration resulting fro m Bose condensation effects.. On the practical side, the surveillance of th is compensation phenomenon appears to be a new way to follow the coalescenc e of conducting bounded clusters with aging.