Abstract
In this paper, measurements of the nonlinear ferroelectric, piezoelectric and dielectric properties of Pb9Ce2Ti12O36 (Pb9CTO) and Ba2NdTi2Nb3O15 (BNTN) ferroelectric ceramics are presented. Hysteresis P(E) loops were measured as a function of applied electric field, frequency and temperature. The coercive field (E c) and remnant polarization (P r) displayed temperature and frequency dependence. Lead-free BNTN ceramics exhibited a coercive field E c > 2.4 kV mm−1 and a piezoelectric coefficient d 33 = 2 pC N−1. The hysteresis loop was pinched above 110°C and a linear response was observed at 155°C, typical of a paraelectric material. Pb9CTO was shown to be ferroelectric with coercive field E c = 1.2 kV mm−1 and a d 33 = 65 pC N−1. The frequency dependences of the impedance of the Pb9CTO discs were analyzed.
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Acknowledgments
This work was supported by the Science Foundation of the Czech Republic (Project Nos. 202/07/1289 and 202/06/0403).
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Burianova, L., Panos, S., Stennett, M.C. et al. Piezoelectric and ferroelectric properties of new Pb9Ce2Ti12O36 and lead-free Ba2NdTi2Nb3O15 ceramics. J Electroceram 25, 116–121 (2010). https://doi.org/10.1007/s10832-010-9598-3
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DOI: https://doi.org/10.1007/s10832-010-9598-3