Giacometti, J. A. [UNESP]Eiras, J. A.Lente, M.Tomioka, J.Wisniewski, C.Moura, W. A.2014-05-272014-05-272002-12-01Proceedings - International Symposium on Electrets, p. 363-366.http://hdl.handle.net/11449/67058The pulsed electric acoustic technique, PEA, have been usually applied to probe space charge profiles in polymers. In this work we show preliminary results obtained with lead zirconate-titanate and niobium, PZTN, ferroelectric ceramic samples. Experiments showed that induced charge densities on sample electrodes are mainly due to the ferroelectric polarization of the sample. We present results of the typical PEA response and the procedure to deconvolute the signal in order to obtain the charge densities and the electric field profiles. The PEA setup allows us to show a non-uniform polarization during ferroelectric switching.363-366engAcoustic wave propagationConvolutionElectric field measurementElectric space chargeElectrodesFerroelectric ceramicsFerroelectricityLead compoundsNiobiumPolarizationPolymersCharge densityFerroelectric polarizationFerroelectric switchingLead zirconate-titanateNon-uniform polarizationPulsed electric acoustic techniqueAcoustoelectric effectsTrabalho apresentado em evento10.1109/ISE.2002.1043019WOS:000179971700089Acesso aberto2-s2.0-0036957943