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Stable and metastable ferroelectric polarization analyzed by the ramp voltage technique
(Proceedings - International Symposium on Electrets, 2002-12-01) [Trabalho apresentado em evento]
The study of the stable and the metastable ferroelectric polarization of poly(vinylidene fluoride), PVDF, was performed using two successive equal sign ramp voltages, mediated by a short-circuit period. Rates from 10 V/s ...
The use of pulsed electric acoustic technique for measuring the polarization reversal in ferroelectric ceramic samples
(Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report, 2002-01-01) [Trabalho apresentado em evento]
The pulsed electric acoustic technique, PEA, has been usually applied to probe space charge profiles in polymers. Preliminary PEA results using a ferroelectric ceramic are presented. If the reverse applied electric field ...