INFLUENCE OF DOPING ON LOW-FREQUENCY DIELECTRIC RELAXATION OF (VDF-TrFE) COPOLYMER. T.B.Frolova, N.D.Gavrilova, K.A.Verkhovskaya*, Moscow State University, Moscow, Russia, *Institute of Crystallography RAS, Moscow, Russia

In this paper low-frequency dielectric relaxation of P(VDF-TrFE) 70/30, pure and doped with rodomine R6G, in frequency range 20Hz-20kHz and temperature region 80-400K were investigated. The region of 310K for the pure copolymer is the region of anomalies of dielectric permittivity and other electrophysical properties. We connect the existence of these anomalies with the structural changes in the amorphous phase of copolymer. After doping by R6G the region of anomalous behavior shifts to 100-110K. Besides, doping results in increasing of values of dielectric permittivity of copolymer (from 80 to 400). The results are used to test the "universal law" of dielectric response.

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