Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/570
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dc.contributorDepartment of Applied Physics-
dc.contributorMaterials Research Centre-
dc.creatorLau, ST-
dc.creatorChan, HLW-
dc.creatorSundaravel, B-
dc.creatorWilson, IH-
dc.creatorChoy, CL-
dc.date.accessioned2014-12-11T08:28:08Z-
dc.date.available2014-12-11T08:28:08Z-
dc.identifier.isbn0-7803-7560-2-
dc.identifier.urihttp://hdl.handle.net/10397/570-
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.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.en_US
dc.rightsThis 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.en_US
dc.subjectCopolymersen_US
dc.subjectCrystal latticesen_US
dc.subjectCrystal microstructureen_US
dc.subjectDielectric relaxationen_US
dc.subjectElectric fieldsen_US
dc.subjectFluorine containing polymersen_US
dc.subjectPermittivityen_US
dc.subjectPhase transitionsen_US
dc.subjectPolarizationen_US
dc.subjectProton irradiationen_US
dc.subjectVinyl resinsen_US
dc.subjectX ray diffraction analysisen_US
dc.titleStructural and property changes of high energy proton-irradiated poly(vinylidene fluoride-trifluoroethylene) 56/44 mol.% copolymeren_US
dc.typeConference Paperen_US
dcterms.abstractHigh-energy proton irradiation with a broad range of dosages has been carried out to investigate the potential for modifying the properties of poly(vinylidene fluoride-trifluoroethylene) 56/44 mol.% copolymer films. The relative permittivity, polarization hysteresis, electric field induced strain, lattice spacing and phase transition behavior of the irradiated copolymer films were studied. With regards to the dielectric and polarization behaviors, the copolymer film can be converted from a typical ferroelectric to a relaxor ferroelectric upon irradiation. This implies that the high-energy protons can break up the coherent polarization domains in the normal ferroelectric copolymer into nano-sized regions. Besides, the XRD data showed that the solid-state phase transition from the polar phase to nonpolar phase is induced in the copolymer during irradiation in which the lattice spacing increases significantly. The electric field induced phase transformation of the nano-sized regions between the polar and nonpolar phase leads to a high electrostrictive strain observed in the irradiated copolymers.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitation11th International Symposium on Electrets (ISE 11) : 1-3 October, 2002, Glen Waverley, Melbourne, Australia : proceedings, p. 102-105-
dcterms.issued2002-
dc.identifier.isiWOS:000179971700025-
dc.identifier.scopus2-s2.0-0036949744-
dc.identifier.rosgroupidr14756-
dc.description.ros2002-2003 > Academic research: refereed > Refereed conference paper-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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