Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27531
Title: Dielectric properties of 65PMN-35PT/P(VDF-TrFE) 0-3 composites
Authors: Lam, KH
Chan, HLW 
Luo, HS
Yin, QR
Yin, ZW
Choy, CL
Keywords: Composite
Hysteresis
Lead magnesium niobate-lead titanate
Piezoelectric
Polyvinylidene fluoride-trifluoroethylene copolymer
Pyroelectric
Issue Date: 2003
Publisher: Elsevier
Source: Microelectronic engineering, 2003, v. 66, no. 1-4, p. 792-797 How to cite?
Journal: Microelectronic engineering 
Abstract: Lead magnesium niobate-lead titanate (PMN-PT with 35 mol.% PT) single crystal powder has been incorporated into a polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE) 70/30 mol.%) copolymer matrix to form 0-3 composites. With 65/35 mol.% composition, PMN-PT has high piezoelectric properties as a result of the enhanced polarizability arising from the coupling between two equivalent energy states. P(VDF-TrFE) ferroelectric copolymer films can be poled to give piezoelectric and pyroelectric performance without prior mechanical stretching. The composites were prepared using solvent casting to disperse the single crystal powder homogeneously in the matrix. Composites with PMN-PT volume fraction φ ranging from 0.05 to 0.4 were fabricated using a hot-press method. The relative permittivity and pyroelectric coefficients of the composites were measured as a function of φ. Good agreement has been obtained between the theoretical and experimental values. Under the same poling condition, the composites have higher pyroelectric coefficient than the pure copolymer films. Hysteresis measurements reveal that the remanent polarization of composites increases as φ increases.
Description: IUMRS-ICEM 2002, Xi an, 10-14 June 2002
URI: http://hdl.handle.net/10397/27531
ISSN: 0167-9317
EISSN: 1873-5568
DOI: 10.1016/S0167-9317(02)01001-8
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