Alves, Neri [UNESP]Giacometti, JoseA [UNESP]Oliveira, O. N. [UNESP]Faria, R. M. [UNESP]2014-05-272014-05-271992-01-01Proceedings - International Symposium on Electrets, p. 454-459.http://hdl.handle.net/11449/64197The nucleation and growth model, which is usually applied to switching phenomena, is adapted for explaining surface potential measurements on the P(VDF-TrFE) (polyvinylidene fluoride-trifluoroethylene) copolymer obtained in a constant current corona triode. It is shown that the growth is one-dimensional and that the nucleation rate is unimportant, probably because surface potential measurements take much longer than the switching ones. The surface potential data can therefore be accounted for by a growth model in which the velocity of growth varies exponentially with the electric field. Since hysteresis loops can be obtained from surface potential measurements, it is suggested that similar mechanisms can be used when treating switching and hysteresis phenomena, provided that account is taken of the difference in the time scale of the measurements.454-459engElectric Corona - EffectsElectric Measurements - VoltageFerroelectric Materials - SwitchingFluorine Containing Polymers - Electric PropertiesMathematical Techniques - IntegrationCorona TriodePolyvinylidene Fluoride (PVDF)Surface PotentialSwitching PhenomenaCopolymersTrabalho apresentado em evento10.1109/ISE.1991.167255Acesso aberto2-s2.0-002663064376076511116192690000-0001-8001-301X