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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/61209
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dc.creatorAnderson Diaspt_BR
dc.creatorRoberto Luiz Moreirapt_BR
dc.date.accessioned2023-11-21T20:09:17Z-
dc.date.available2023-11-21T20:09:17Z-
dc.date.issued2019-
dc.citation.volume50pt_BR
dc.citation.issue3pt_BR
dc.citation.spage474pt_BR
dc.citation.epage480pt_BR
dc.identifier.doihttps://doi.org/10.1002/jrs.5536pt_BR
dc.identifier.issn0377-0486pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/61209-
dc.description.resumoBa3Sc4O9 and Sr3Sc4O9 ceramics were synthesized by conventional solid-state reactions at 1200°C, being further sintered at 1300°C in order to produce ceramic bodies suitable for exploring their structural and optical vibration properties. Optimized experimental conditions were employed to unveil the complex vibrational spectra of these ceramics by polarized Raman scattering. A reliable and comprehensive set of phonon features was obtained from these experiments: The 30 theoretically expected optically active lattice modes for each material were in fact observed, from which 15 could be assigned as totally symmetric A-polar modes and 15 attributed as degenerate (and asymmetric) E-polar ones. Differences between experimental data of Ba-containing and Sr-containing samples are discussed in terms of their ionic radii and molar masses. The knowledge of the optical phonon features reported here can help to understand the exceptional luminescence properties of Ba3Sc4O9 and Sr3Sc4O9 rhombohedral phases when doped with trivalent ions, as recently reported by the literature.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetospt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Raman Spectroscopypt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectBa3Sc4O9pt_BR
dc.subjectSr3Sc4O9pt_BR
dc.subjectCeramicspt_BR
dc.subjectLuminescencept_BR
dc.subjectPhosphorspt_BR
dc.subjectPolarization-resolved Raman spectroscopypt_BR
dc.subject.otherMaterial cerâmicopt_BR
dc.subject.otherLuminescênciapt_BR
dc.subject.otherRaman, Espectroscopia dept_BR
dc.titleSynthesis, structural and optical-vibration properties of Ba3Sc4O9 and Sr3Sc4O9 ceramicspt_BR
dc.title.alternativeSynthesis, structural and optical-vibration properties of ba 3</sub> sc 4</sub> o 9</sub> and sr 3</sub> sc 4</sub> o 9</sub> ceramicspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://analyticalsciencejournals.onlinelibrary.wiley.com/doi/full/10.1002/jrs.5536pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7413-1087pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6820-0269pt_BR
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