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Investigation on dielectric response of PMN ceramics around paraelectric-ferroelectric diffuse phase transition

dc.contributor.authorGuerra, J. D. S.
dc.contributor.authorAraujo, E. B. [UNESP]
dc.contributor.authorGuarany, C. A. [UNESP]
dc.contributor.authorLima, E. C. [UNESP]
dc.contributor.institutionUniversidade Federal de Uberlândia (UFU)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:29:48Z
dc.date.available2014-05-20T13:29:48Z
dc.date.issued2009-11-01
dc.description.abstractThe dielectric properties of relaxor ferroelectric lead magnesium niobate Pb(Mg(1/3)Nb(2/3))O(3) (PMN) ceramics have been investigated. These studies were conducted taking into account the characterisations of the complex dielectric permittivity (real and imaginary parts) as a function of temperature and frequency in a wide interval. on the other hand, the dc 'bias' electrical field dependence of the real dielectric permittivity (C-V characterisations) has been analysed around the paraelectric-ferroelectric diffuse phase transition. Results obtained at room temperature (paraelectric phase) showed a typical behaviour of conventional dielectric materials, while measurements performed at 200 K (ferroelectric phase) evidenced an anomalous behaviour for frequencies up to 100 kHz. Such observed anomalies were characterised by two asymmetrical peaks on sweep-up and sweep-down, at -15 and +18 kV cm(-1) respectively.en
dc.description.affiliationUniversidade Federal de Uberlândia (UFU), Inst Fis, Grp Ferroeletr & Mat Multifunc, BR-38400902 Uberlandia, MG, Brazil
dc.description.affiliationUniv Estadual Paulista, Grp Ferroeletr & Novos Mat, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Grp Ferroeletr & Novos Mat, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFAPESP: 06/60013-5
dc.description.sponsorshipIdFAPESP: 07/00183-7
dc.description.sponsorshipIdCNPq: 301382/2006-9
dc.description.sponsorshipIdCAPES: 132/2007
dc.format.extent1316-1320
dc.identifierhttp://dx.doi.org/10.1179/026708309X12474766656263
dc.identifier.citationMaterials Science and Technology. Leeds: Maney Publishing, v. 25, n. 11, p. 1316-1320, 2009.
dc.identifier.doi10.1179/026708309X12474766656263
dc.identifier.issn0267-0836
dc.identifier.lattes6725982228402054
dc.identifier.urihttp://hdl.handle.net/11449/10096
dc.identifier.wosWOS:000272049300005
dc.language.isoeng
dc.publisherManey Publishing
dc.relation.ispartofMaterials Science and Technology
dc.relation.ispartofjcr1.803
dc.relation.ispartofsjr0,889
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectFerroelectricsen
dc.subjectRelaxorsen
dc.subjectPhase transitionen
dc.subjectPMNen
dc.titleInvestigation on dielectric response of PMN ceramics around paraelectric-ferroelectric diffuse phase transitionen
dc.typeArtigo
dcterms.licensehttp://maneypublishing.com/index.php/resources/authors/copyright_and_permissions_information_for_authors/
dcterms.rightsHolderManey Publishing
unesp.author.lattes6725982228402054
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentFísica e Química - FEISpt

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