Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/588
Title: Separate poling of inclusions and matrix in PT/P(VDF-TrFE) 0-3 composites
Authors: Ploss, Beatrix
Ploss, Bernd
Shin, Franklin G.
Chan, Helen L. W.
Choy, Chung-loong
Subjects: Copolymers
Ferroelectric materials
Ferroelectricity
Matrix algebra
Permittivity measurement
Pyroelectricity
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.
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.
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.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Type: Conference Paper
URI: http://hdl.handle.net/10397/588
ISBN: 0780349598
Appears in Collections:MRC Conference Papers & Presentations
AP Conference Papers & Presentations

Files in This Item:
File Description SizeFormat 
inclusions-matrix_98.pdf353.09 kBAdobe PDFView/Open


All items in the PolyU Institutional Repository are protected by copyright, with all rights reserved, unless otherwise indicated. No item in the PolyU IR may be reproduced for commercial or resale purposes.