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The use of pulsed electric acoustic technique for measuring electric field profiles in ferroelectric ceramic
(Proceedings - International Symposium on Electrets, 2002-12-01) [Trabalho apresentado em evento]
The 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 ...
Electrode poling of cellular polypropylene films with short high-voltage pulses
(Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report, 2002-01-01) [Trabalho apresentado em evento]
Recently, piezoelectric cellular polypropylene (PP) was proposed as a new type of quasi-ferroelectric. The observed hysteresis of the charge density as a function of the electric field could be explained as field-dependent ...