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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/61589
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dc.creatorJéssica Ivone Viegaspt_BR
dc.creatorRoberto Luiz Moreirapt_BR
dc.creatorAnderson Diaspt_BR
dc.date.accessioned2023-11-30T19:13:54Z-
dc.date.available2023-11-30T19:13:54Z-
dc.date.issued2020-
dc.citation.volume110pt_BR
dc.citation.spage103130pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.vibspec.2020.103130pt_BR
dc.identifier.issn0924-2031pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/61589-
dc.description.resumoThis work reports on the optical-vibration properties of Li2ZnGeO4 ceramics prepared by solid-state reactions. Single-phase, high-purity materials belonging to the monoclinic P21/n space group were obtained. Micro-Raman scattering and micro-infrared spectroscopy, besides group-theory calculations, were employed to determine and assign the phonon modes. Polarized Raman scattering was able to discern and assign a total of 36 modes, in good agreement with theoretical predictions (48 phonons were foreseen). Micro-infrared spectroscopy in the frequency range 50−4000 cm−1 was applied on sintered, polished samples and a total of 30 polar modes were identified (among the 45 infrared modes predicted by group-theory calculations). Detailed dispersion analyses were conducted by using Kramers-Krönig relations as well as the Lorentz model. Intrinsic dielectric constant and quality factor were calculated as 6.2 and 387 THz, respectively. The promising results obtained in the present work showed that monoclinic Li2ZnGeO4 ceramics are suitable for applications in wireless communication devices.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.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.ispartofVibrational Spectroscopypt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectLISICONpt_BR
dc.subjectLi2ZnGeO4pt_BR
dc.subjectMicrowave dielectricspt_BR
dc.subjectRaman scatteringpt_BR
dc.subjectInfrared spectroscopypt_BR
dc.subject.otherMaterial cerâmicopt_BR
dc.subject.otherMicroondaspt_BR
dc.subject.otherRaman, Efeito dept_BR
dc.subject.otherEspectroscopia de infravermelhopt_BR
dc.titleOptical-vibration properties of Li2ZnGeO4 dielectric ceramicspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S092420312030134Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4865-5052pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6820-0269pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7413-1087pt_BR
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