Plasma crystallization of polymer-ferroelectric/piezoelectric ceramic composites and their piezoelectric properties

The crystallization of “polymer-ferroelectric/piezoelectric ceramic” composites under the action of an electric discharge plasma and temperature is investigated. It is shown that this process results in strong oxidation of polymer chains. The oxidation of polymer chains is accompanied by an enhancement of interfacial interactions and an increase in the concentration of charge localization centers or the number of local levels in the quasi-band gap of the polymer phase, which upon polarization leads to an increase in interfacial charges. These charges and oxidation of polymer chains favor the effective polarization of piezoelectric phase domains and, hence, an increase in the piezoelectric parameters of the composite.