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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/55439
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dc.creatorFábio Lacerda Resende e Silvapt_BR
dc.creatorAdailton Azevedo Araújo Filhopt_BR
dc.creatorMauricélio Bezerra da Silvapt_BR
dc.creatorKarla Balzuweitpt_BR
dc.creatorJean‐Louis Bantigniespt_BR
dc.creatorEwerton Wagner Santos Caetanopt_BR
dc.creatorRoberto Luiz Moreirapt_BR
dc.creatorValder Nogueira Freirept_BR
dc.creatorAriete Righipt_BR
dc.date.accessioned2023-06-27T19:48:13Z-
dc.date.available2023-06-27T19:48:13Z-
dc.date.issued2018-
dc.citation.volume49pt_BR
dc.citation.issue3pt_BR
dc.citation.spage538pt_BR
dc.citation.epage548pt_BR
dc.identifier.doihttps://doi.org/10.1002/jrs.5316pt_BR
dc.identifier.issn1097-4555pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/55439-
dc.description.resumoSodium trititanate Na2Ti3O7 microcrystals were carefully prepared by sodium carbonate and titanium dioxide solid-state reaction and characterized by scanning and transmission electron microscopies, selected area electron diffraction, X-ray powder diffraction, and Raman and Fourier transform infrared spectroscopies. Electron microscopic techniques revealed that the samples were formed by elongated particles several microns long with broad size distributions. The zone axis and crystal growth direction of the elongated particles were determined by selected area electron diffraction. These results were useful for identifying the symmetries of the optical vibrational modes obtained by infrared absorption and polarized Raman scattering of oriented crystals. For a complete assignment of the depicted phonon modes, Fourier transform infrared spectroscopy and Raman data were compared with theoretical data obtained from first-principles calculations within the framework of the density functional theory. A very nice agreement was established between the characteristic features of measured and calculated vibrational modes. In particular, all optical phonon modes of Na2Ti3O7 could be experimentally observed and assigned to their correct symmetries. These results must be useful for describing the physical behavior of the system and designing new technological applications.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.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetospt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Raman Spectroscopy-
dc.rightsAcesso Restritopt_BR
dc.subjectDFT calculationspt_BR
dc.subjectInfrared spectrapt_BR
dc.subjectPolarized Raman spectrapt_BR
dc.subjectSodium trititanatept_BR
dc.subjectSolid‐state synthesispt_BR
dc.subject.otherEspectroscopia de Ramanpt_BR
dc.subject.otherMicroscopia eletrônica de varredurapt_BR
dc.titlePolarized Raman, FTIR, and DFT study of Na2Ti3O7 microcrystalspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jrs.5316pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9719-4734pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8790-3944pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7941-3956pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7124-4545pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0958-5677pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-1021-6927pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6820-0269pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7867-3908pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-8752-9609pt_BR
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