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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/489

Title: Studies of proton irradiated 0.9PMN-0.1PT/P(VDF-TrFE) 0-3 composites
Authors: Lam, Kwok-ho
Chan, Helen L. W.
Choy, Chung-loong
Luo, E. Z.
Wilson, I. H.
Subjects: Polyvinylidene fluoride-trifluoroethylene
Ferroelectrics
Nano-domains
Dielectric permittivity
Issue Date: 2002
Publisher: IEEE
Citation: ISAF 2002 : proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics : Nara, Japan, May 28-June 1, 2002, p. 33-36.
Abstract: Polyvinylidene fluoride-trifluoroethylene [P(VDF-TrFE) 70/30 mol%] copolymer can be transformed from a ferroelectric, to a relaxor material after proton irradiation. The phase transition peak broadens and shifts towards lower temperature as the measurement frequency decreases. In the present study, 0-3 composites are fabricated by incorporating 0.9Pb(Mg[sub ⅓]Nb[sub ⅔])0₃-0.1PbTi0₃ ceramic powder into a P(VDF-TrFE) 70/30 mol% copolymer matrix. 0.9PMN-0.1PT ceramic is a relaxor ferroelectric with high dielectric permittivity. It was found that the relative permittivity of PMN-PT/P(VDF-TrFE) 0-3 composite increases with increasing ceramic volume fraction. Composites with 0.3 and 0.4 volume fraction of 0.9PMN-0.1PT were subjected to proton irradiation. With a 80 Mrad (4.76 x 1O¹³ ions/cm²) proton dosage, the relative permittivity of the 0.4 volume fraction 0-3 composites can go up to 130 near room temperature (at 1kHz).
Rights: © 2002 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/10397/489
ISBN: 0780374142
ISSN: 10994734
Appears in Collections:MRC Conference Papers & Presentations
AP Conference Papers & Presentations

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