Dielectric and non-ohmic analysis of Sr2+ influences on CaCu3Ti4O12-based ceramic composites

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal do ABC (UFABC)-
Autor(es): dc.creatorCortés, J. A. [UNESP]-
Autor(es): dc.creatorMoreno, H. [UNESP]-
Autor(es): dc.creatorOrrego, S. [UNESP]-
Autor(es): dc.creatorBezzon, V. D.N.-
Autor(es): dc.creatorRamírez, M. A. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:43:51Z-
Data de disponibilização: dc.date.available2022-02-22T00:43:51Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.materresbull.2020.111071-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205259-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205259-
Descrição: dc.descriptionIn this study, CaCu3Ti4O12 ceramic composites were prepared through solid-state reaction by adding Sr2+ and removing Cu2+. Application of the Rietveld method and structure refinement revealed the presence of pure CaCu3Ti4O12 (CCTO) phase for x = 0.00 and Sr0.75Ca0.25TiO3 (SCTO) phase for sample x = 3.00. The other samples presented a mixture of both phases. The sample microstructures showed that increasing the amount of SCTO phase led to the formation of cubic CCTO grains. The x = 0.15 sample presented giant dielectric permittivity results, 3.28 × 105, associated with increased grain size and greater grain boundary capacitance, thus indicating it could be a promising material for class III capacitors. On the other hand, greater presence of the SCTO phase displayed potential non-ohmic behavior, as seen with sample x = 2.70, which has a high nonlinear coefficient (α ∼ 30.0) and low current leakage, (IL ∼ 9.0 μA).-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionSão Paulo State University – UNESP Faculty of Engineering of Guaratingueta, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, 12.516-410-
Descrição: dc.descriptionFederal University of ABC - UFABC Center for Natural and Human Science (CCNH), Av. Dos Estados 5001, Bangu, 09.210-580-
Descrição: dc.descriptionSão Paulo State University – UNESP Faculty of Engineering of Guaratingueta, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, 12.516-410-
Idioma: dc.languageen-
Relação: dc.relationMaterials Research Bulletin-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCaCu3Ti4O12-
Palavras-chave: dc.subjectDielectric properties-
Palavras-chave: dc.subjectNon-ohmic behavior-
Palavras-chave: dc.subjectStorage device-
Título: dc.titleDielectric and non-ohmic analysis of Sr2+ influences on CaCu3Ti4O12-based ceramic composites-
Tipo de arquivo: dc.typelivro digital-
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