Polarization-resolved Raman modes of monoclinic SrAl2O4 ceramics

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dc.creatorAnderson Dias
dc.creatorRoberto Luiz Moreira
dc.date.accessioned2023-08-10T18:33:10Z
dc.date.accessioned2025-09-08T23:38:02Z
dc.date.available2023-08-10T18:33:10Z
dc.date.issued2018
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.5405
dc.identifier.issn0377-0486
dc.identifier.urihttps://hdl.handle.net/1843/57704
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Raman Spectroscopy
dc.rightsAcesso Restrito
dc.subjectMaterial cerâmico
dc.subjectRaman, Espectroscopia de
dc.subjectSinterização
dc.subjectEstrôncio
dc.subjectMicroestrutura
dc.subjectLuminescência
dc.subject.otherCeramics
dc.subject.otherPhosphors
dc.subject.otherPolarization-resolved Raman spectroscopy
dc.subject.otherSintering
dc.subject.otherStrontium monoaluminate - SrAl2O4
dc.titlePolarization-resolved Raman modes of monoclinic SrAl2O4 ceramics
dc.typeArtigo de periódico
local.citation.epage1521
local.citation.issue9
local.citation.spage1514
local.citation.volume49
local.description.resumoSrAl2O4 materials were obtained by molten salt synthesis and sintered at high temperatures to produce a ceramic body suitable for polarization-resolved Raman spectroscopy measurements. Optimized experimental conditions were employed to study the complex vibrational spectrum of these ceramics under polarized light. A reliable set of experimental bands was obtained: 69 Raman modes were in fact observed, out of the 81 bands foreseen for the stable monoclinic polymorph of the material, from which 38 could be assigned as totally symmetric A-type modes, and 31 attributed as asymmetric B-type ones. Significant differences between experimental data and theoretical predictions indicated that additional efforts are necessary to understand these two sets of vibrational information. The knowledge of the optical phonon features reported here can help to understand the exceptional luminescence properties of SrAl2O4 in its monoclinic phase.
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/10.1002/jrs.5405

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