Synthesis, structural and optical-vibration properties of Ba3Sc4O9 and Sr3Sc4O9 ceramics

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dc.creatorAnderson Dias
dc.creatorRoberto Luiz Moreira
dc.date.accessioned2023-11-21T20:09:17Z
dc.date.accessioned2025-09-08T23:14:20Z
dc.date.available2023-11-21T20:09:17Z
dc.date.issued2019
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetos
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1002/jrs.5536
dc.identifier.issn0377-0486
dc.identifier.urihttps://hdl.handle.net/1843/61209
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Raman Spectroscopy
dc.rightsAcesso Restrito
dc.subjectMaterial cerâmico
dc.subjectLuminescência
dc.subjectRaman, Espectroscopia de
dc.subject.otherBa3Sc4O9
dc.subject.otherSr3Sc4O9
dc.subject.otherCeramics
dc.subject.otherLuminescence
dc.subject.otherPhosphors
dc.subject.otherPolarization-resolved Raman spectroscopy
dc.titleSynthesis, structural and optical-vibration properties of Ba3Sc4O9 and Sr3Sc4O9 ceramics
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> ceramics
dc.typeArtigo de periódico
local.citation.epage480
local.citation.issue3
local.citation.spage474
local.citation.volume50
local.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.
local.identifier.orcidhttps://orcid.org/0000-0001-7413-1087
local.identifier.orcidhttps://orcid.org/0000-0001-6820-0269
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://analyticalsciencejournals.onlinelibrary.wiley.com/doi/full/10.1002/jrs.5536

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