Structural refinement and photoluminescence properties of cube-like (Ca1-xCux)TiO3 crystals synthesized by the microwave-hydrothermal method

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Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorOliveira, Larissa H.-
Autor(es): dc.creatorMoura, Ana P. de [UNESP]-
Autor(es): dc.creatorCavalcante, Laecio S. [UNESP]-
Autor(es): dc.creatorAntonio, Selma G. [UNESP]-
Autor(es): dc.creatorLongo, Elson [UNESP]-
Autor(es): dc.creatorVarela, Jose A.-
Autor(es): dc.creatorLaudon, M.-
Autor(es): dc.creatorRomanowicz, B.-
Data de aceite: dc.date.accessioned2022-02-22T00:12:42Z-
Data de disponibilização: dc.date.available2022-02-22T00:12:42Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2012-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/197453-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/197453-
Descrição: dc.descriptionIn this work, (Ca1-xCux)TiO3 crystals with (x = 0, 0.01 and 0.02), labeled as CTO, CCTO1 and CCTO2, were synthesized by the microwave-hydrothermal method at 140 degrees C for 32 min. XRD patterns (Fig.1), Rietveld refinement and FT-Raman spectroscopy indicated that these crystals present orthorhombic structure Pbnm. Micro Raman and XANES spectra suggested that the substitution of Ca by Cu in A-site promoted a displacement of the [TiO6] [TiO6] clusters adjacent from its symmetric center, which leads distortions on the [CaO12] clusters neighboring and consequently cause the strains into the CaTiO3 lattice. FE-SEM images showed that these crystals have an irregular shape as cube like probably indicating an Ostwald-ripening and self-assemble as dominant mechanisms to crystals growth. The powders presented an intense PL blue-emission.-
Descrição: dc.descriptionUniv Fed Sao Carlos, Sao Carlos, SP, Brazil-
Descrição: dc.descriptionUNESP, Inst Quim, Araraquara, SP, Brazil-
Descrição: dc.descriptionUNESP, Inst Quim, Araraquara, SP, Brazil-
Formato: dc.format394-397-
Idioma: dc.languageen-
Publicador: dc.publisherCrc Press-taylor & Francis Group-
Relação: dc.relationNanotechnology 2012, Vol 1: Advanced Materials, Cnts, Particles, Films And Composites-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectOptical materials-
Palavras-chave: dc.subjectChemical synthesis-
Palavras-chave: dc.subjectXANES-
Palavras-chave: dc.subjectLuminescence-
Palavras-chave: dc.subjectmicrocrystals-
Título: dc.titleStructural refinement and photoluminescence properties of cube-like (Ca1-xCux)TiO3 crystals synthesized by the microwave-hydrothermal method-
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