Local electromethanical properties of the CaCu 3Ti 4O 12 ceramics

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dc.contributor.authorTararam, Ronald [UNESP]
dc.contributor.authorBdikin, Igor
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorBueno, Paulo Roberto [UNESP]
dc.contributor.authorGracio, José
dc.contributor.authorKholkin, Andrei
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of Aveiro
dc.date.accessioned2014-05-27T11:25:21Z
dc.date.available2014-05-27T11:25:21Z
dc.date.issued2010-12-01
dc.description.abstractScanning probe microscopy (SPM) was used to probe piezoelectric vibrations and local conductivity in CaCu 3Ti 4O 12 (CCTO) ceramics at room temperature. Piezoelectric contrast was observed on the polished surfaces of CCTO in both vertical (out-of-plane) and lateral (in-plane) modes and depended on the grain orientation varying in sign and amplitude. The piezoelectric contrast is shown to be controlled by the electrical bias (local poling) and displayed a ferroelectric-like reversible hysteresis accompanied with a change of the phase of piezoelectric signal. Flexoelectric effect (strain-gradient-induced polarization) due to surface relaxation was invoked to explain the observed contrast inside the grains. © 2010 Materials Research Society.en
dc.description.affiliationDepartamento de Físico-Química Instituto de Química Universidade Estadual Paulista (UNESP), 14800-900, Araraquara, SP
dc.description.affiliationDepartment of Mechanical Engineering TEMA University of Aveiro, 3810-193 Aveiro
dc.description.affiliationDepartment of Ceramics and Glass Engineering CICECO University of Aveiro, 3810-193 Aveiro
dc.description.affiliationUnespDepartamento de Físico-Química Instituto de Química Universidade Estadual Paulista (UNESP), 14800-900, Araraquara, SP
dc.format.extent6-10
dc.identifierhttp://dx.doi.org/10.1557/PROC-1255-M03-19
dc.identifier.citationMaterials Research Society Symposium Proceedings, v. 1255, p. 6-10.
dc.identifier.doi10.1557/PROC-1255-M03-19
dc.identifier.issn0272-9172
dc.identifier.lattes0477045906733254
dc.identifier.orcid0000-0003-2827-0208
dc.identifier.scopus2-s2.0-79952000954
dc.identifier.urihttp://hdl.handle.net/11449/72072
dc.language.isoeng
dc.relation.ispartofMaterials Research Society Symposium Proceedings
dc.relation.ispartofsjr0,139
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectElectrical bias
dc.subjectFlexoelectric effects
dc.subjectGrain orientation
dc.subjectIn-plane
dc.subjectInduced polarization
dc.subjectOut-of-plane
dc.subjectPiezoelectric signals
dc.subjectPiezoelectric vibration
dc.subjectPolished surfaces
dc.subjectRoom temperature
dc.subjectStrain gradients
dc.subjectCeramic materials
dc.subjectPerovskite
dc.subjectProbes
dc.subjectScanning probe microscopy
dc.subjectPiezoelectricity
dc.titleLocal electromethanical properties of the CaCu 3Ti 4O 12 ceramicsen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://journals.cambridge.org/action/displaySpecialPage?pageId=4676
unesp.author.lattes0477045906733254[4]
unesp.author.orcid0000-0003-2827-0208[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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