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Title: Separate poling of inclusions and matrix in PT/P(VDF-TrFE) 0-3 composites
Authors: Ploss, B
Ploss, B
Shin, FG
Chan, HLW 
Choy, CL
Keywords: Copolymers
Ferroelectric materials
Matrix algebra
Permittivity measurement
Issue Date: 1998
Publisher: IEEE
Source: ISAF 1998 : proceedings of the eleventh IEEE International Symposium on Applications of Ferroelectrics, Montreux, Switzerland, August 24-27, 1998, p. 299-302 How to cite?
Abstract: A procedure for separate poling of the ceramic particles and the copolymer matrix of 0-3 composites has been developed. 2.5 μm thick films of 56/44 mol-% vinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) copolymer embedded with 8 volume-% lead titanate (PT) ceramic particles were investigated. First, the ceramic particles in the composite are polarized under a DC-field at temperatures above the Curie temperature of the copolymer. In the second step the P(VDF-TrFE) matrix is poled at room temperature in an AC-field at a frequency of 1 Hz. The degree of poling of the composite is then investigated by the measurement of the second order permittivity and the pyroelectric coefficient over a temperature range covering the ferroelectric and paraelectric phase of the copolymer matrix. The results show that the polarization of the ceramic is unchanged by the subsequent AC poling of the copolymer matrix.
ISBN: 0-7803-4959-8
Rights: © 1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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