Effects of Sr and Mn co-doping on microstructural evolution and electrical properties of LaAlO3

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorVillas-Boas, Lúcia Adriana [UNESP]-
Autor(es): dc.creatorGoulart, Celso Antonio-
Autor(es): dc.creatorDe Souza, Dulcina Pinatti Ferreira-
Data de aceite: dc.date.accessioned2022-02-22T00:24:51Z-
Data de disponibilização: dc.date.available2022-02-22T00:24:51Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.2298/PAC1904333V-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198538-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198538-
Descrição: dc.descriptionIn this work, we investigate the effects of Sr and Mn co-doping on the micro structural development and electrical properties of LaAlO3 synthesised by solid state reaction and sintered at 1500 and 1600 °C The addition of Sr and Mn contributed to the crystallization and stabilization of the perovskite structure. However, the addition of Sr alone lead to the formation of heterogeneous micro structure, while the combined effect of Sr and Mn improved Al and La homogeneity in the perovskite structure. Total electrical conductivity is enhanced by three orders of magnitude with Sr addition (La08Sr02AlO3-δ: 5.74 × 10-4 S/cm at 600 °C) and five orders of magnitude with Mn co-doping (La0.8Sr0.2Al0.8Mn0.2O3-δ: 3.6 × 10-2 S/cm at 600 °C) compared to the undoped LaAlO3 (2.96 × 10-6 S/cm at 600 °C). The Sr and Mn co-doped LaAlO3 present favourable catalytic activity for electrode reactions even with a low dopant concentration (20 mol%).-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Sciences and Engineering-
Descrição: dc.descriptionGraduate Program in Materials Science and Engineering Department of Materials Engineering Federal University of São Carlos-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Sciences and Engineering-
Formato: dc.format333-341-
Idioma: dc.languageen-
Relação: dc.relationProcessing and Application of Ceramics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDoping-
Palavras-chave: dc.subjectElectrical conduction-
Palavras-chave: dc.subjectLaAlO3-
Palavras-chave: dc.subjectPerovskite oxides-
Título: dc.titleEffects of Sr and Mn co-doping on microstructural evolution and electrical properties of LaAlO3-
Tipo de arquivo: dc.typelivro digital-
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