Structure, ferroelectric/magnetoelectric properties and leakage current density of (Bi0.85Nd0.15)FeO3 thin films

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dc.contributor.authorSimões, Alexandre Zirpoli [UNESP]
dc.contributor.authorCavalcante, L. S. [UNESP]
dc.contributor.authorMoura, F.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Itajubá (UNIFEI)
dc.date.accessioned2014-05-20T15:33:37Z
dc.date.available2014-05-20T15:33:37Z
dc.date.issued2011-04-28
dc.description.abstractIn this paper, we report on the structure, ferroelectric/magnetoelectric properties and improvement of leakage current density of (Bi0.85Nd0.15)FeO3 (BNFO) thin films deposited on Pt(1 1 1)/Ti/SiO2/Si substrates from the polymeric precursor method. X-ray patterns and Rietveld refinement indicated that BNFO thin films with a tetragonal structure can be obtained at 500 degrees C for 2 h in static air. Field emission scanning electron, atomic force and piezoelectric force microscopies showed the microstructure, thickness and domains with polarization-oriented vectors of BNFO thin films. Ferroelectric and magnetoelectric properties are evident by hysteresis loops. The magnetoelectric coefficient measurement was performed to show the magnetoelectric coupling behavior. The maximum magnetoelectric coefficient in the longitudinal direction was close to 12 V/cm Oe. Piezoresponse force microscopy micrographs reveal a polarization reversal with 71 degrees and 180 degrees domain switchings and one striped-domain pattern oriented at 45 degrees besides the presence of some nanodomains with rhombohedral phase involved in a matrix with tetragonal structure. The cluster models illustrated the unipolar strain behavior of BNFO thin films. The leakage current density at 5.0V is equal to 1.5 x 10(-10) A/cm(2) and the dominant mechanism in the low-leakage current for BNFO thin films was space-charge-limited conduction. (C) 2011 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Engn Guaratingueta, BR-12516410 São Paulo, Brazil
dc.description.affiliationUNIFEI Universidade Federal de Itajubá (UNIFEI), BR-3590037 Itabira, MG, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Engn Guaratingueta, BR-12516410 São Paulo, 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: 09/50303-4
dc.format.extent5326-5335
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2011.02.030
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 509, n. 17, p. 5326-5335, 2011.
dc.identifier.doi10.1016/j.jallcom.2011.02.030
dc.identifier.issn0925-8388
dc.identifier.lattes3573363486614904
dc.identifier.urihttp://hdl.handle.net/11449/42187
dc.identifier.wosWOS:000289373000027
dc.language.isoeng
dc.publisherElsevier B.V. Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.ispartofjcr3.779
dc.relation.ispartofsjr1,020
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectFerroelectricsen
dc.subjectChemical synthesisen
dc.subjectPiezoelectricityen
dc.subjectMagnetic measurementsen
dc.titleStructure, ferroelectric/magnetoelectric properties and leakage current density of (Bi0.85Nd0.15)FeO3 thin filmsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
unesp.author.lattes3573363486614904
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt

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