Piezoelectric and ferroelectric properties of new Pb9Ce2Ti12O36 and lead-free Ba2NdTi2Nb3O15 ceramics

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Title:	Piezoelectric and ferroelectric properties of new Pb9Ce2Ti12O36 and lead-free Ba2NdTi2Nb3O15 ceramics
Authors:	Burianova, L Panos, S Stennett, M C West, A R Subodh, G Sebastian, M T Kamba, S
Keywords:	Ferroelectric properties Piezoelectric properties Pb free ferroelectric ceramics
Issue Date:	2010
Publisher:	Springer
Citation:	Journal of Electroceramics 25(2-4):116-121;Oct 2010
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 110A degrees C and a linear response was observed at 155A degrees 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.
URI:	http://ir.niist.res.in:8080/jspui/handle/123456789/1241
ISSN:	1385-3449
Appears in Collections:	2010

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