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Dielectric spectroscopy analysis of CaCu3Ti4O12 polycrystalline systems

dc.contributor.authorBueno, Paulo Roberto [UNESP]
dc.contributor.authorRamirez, M. A.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:21:07Z
dc.date.available2014-05-20T15:21:07Z
dc.date.issued2006-11-06
dc.description.abstractDielectric spectroscopy was used in this study to examine CaCu3Ti4O12 polycrystalline samples. The analysis involved systems presenting low non-Ohmic properties, and the grain's internal domain was evaluated separately from the contribution of barrier-layer capacitances associated with Schottky-type barriers in this type of material. The effect of oxygen-rich atmosphere and high cooling rate was evaluated, revealing a strong increase in the dielectric properties of the CaCu3Ti4O12 system under these conditions. This effect was attributed to a chemical change in the grain's internal domain, which may be considered an internal barrier-layer capacitance of the polycrystalline material. (c) 2006 American Institute of Physics.en
dc.description.affiliationUniv Estadual Paulista, Dept Fisicoquim, Inst Quim, BR-14800900 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Fisicoquim, Inst Quim, BR-14800900 São Paulo, Brazil
dc.format.extent3
dc.identifierhttp://dx.doi.org/10.1063/1.2386916
dc.identifier.citationApplied Physics Letters. Melville: Amer Inst Physics, v. 89, n. 19, 3 p., 2006.
dc.identifier.doi10.1063/1.2386916
dc.identifier.fileWOS000241960400017.pdf
dc.identifier.issn0003-6951
dc.identifier.lattes0477045906733254
dc.identifier.orcid0000-0003-2827-0208
dc.identifier.urihttp://hdl.handle.net/11449/32302
dc.identifier.wosWOS:000241960400017
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofApplied Physics Letters
dc.relation.ispartofjcr3.495
dc.relation.ispartofsjr1,382
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleDielectric spectroscopy analysis of CaCu3Ti4O12 polycrystalline systemsen
dc.typeArtigo
dcterms.licensehttp://publishing.aip.org/authors/web-posting-guidelines
dcterms.rightsHolderAmer Inst Physics
dspace.entity.typePublication
unesp.author.lattes0477045906733254[1]
unesp.author.orcid0000-0003-2827-0208[1]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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