Surface potentials of corona-charged ferroelectric P(VDF-TrFE) copolymer samples

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dc.contributor.authorAlves, Neri [UNESP]
dc.contributor.authorMinami, G.
dc.contributor.authorGiacometti, J. A.
dc.contributor.authorLeal Ferreira, G. F.
dc.contributor.authorOliveira, O. N.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:54:33Z
dc.date.available2015-03-18T15:54:33Z
dc.date.issued1993-01-01
dc.description.abstractSurface potential measurements are presented as a function of time for negatively corona charged P(VDF-TrFE) samples in a constant current corona triode kept at low humidity levels. The surface potential curves roughly display three time regions, the middle one being a plateau at the coercive field where dipole switching occurs, preceded and followed by capacitive charging regions. This behavior is characteristic of ferroelectric polymers, as has already been reported for PVDF. The experimental results are interpreted by neglecting the conduction through the sample, assuming a dynamics for the electrical polarization which depends on the time only through the changing electric field, and also by assuming a distribution of coercive fields. This analysis allows the determination of a mean coercive field and remanent polarization of about 43 mC/m(2) and 56 MVlm, respectively.en
dc.description.affiliationUSP, Inst Fis & Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent219-226
dc.identifierhttp://dx.doi.org/10.1080/00150199308211441
dc.identifier.citationFerroelectrics. Abingdon: Taylor & Francis Ltd, v. 150, n. 1, p. 219-226, 1993.
dc.identifier.doi10.1080/00150199308211441
dc.identifier.issn0015-0193
dc.identifier.lattes7607651111619269
dc.identifier.orcid0000-0001-8001-301X
dc.identifier.urihttp://hdl.handle.net/11449/116931
dc.identifier.wosWOS:000208803900020
dc.language.isoeng
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofFerroelectrics
dc.relation.ispartofjcr0.728
dc.relation.ispartofsjr0,260
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectP(VDF-TrFE)en
dc.subjectcorona triodeen
dc.subjectferroelectricityen
dc.titleSurface potentials of corona-charged ferroelectric P(VDF-TrFE) copolymer samplesen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderTaylor & Francis Ltd
unesp.author.lattes7607651111619269
unesp.author.orcid0000-0001-8001-301X[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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