Electrical conduction of polyvinylidene fluoride at low electric field

摘要

Three interesting features in the σapp vs. 1/T plot were found with the continuous current measurement during the cooling process. The abrupt change of σapp near Tc is thought to be due to the reduction of the number of charge carriers caused by crystallization and the bend behavior of σapp may be associated with the crystalline dispersion. The hump in the region C is induced by the displacement current originating from the dipole orientation. The reason why the curve obtained with Th < Tc has no bend behavior is under consideration at present.