Optical-vibration properties of Li2ZnGeO4 dielectric ceramics

Página do item simplificado
dc.creatorJéssica Ivone Viegas
dc.creatorRoberto Luiz Moreira
dc.creatorAnderson Dias
dc.date.accessioned2023-11-30T19:13:54Z
dc.date.accessioned2025-09-08T22:50:29Z
dc.date.available2023-11-30T19:13:54Z
dc.date.issued2020
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.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.vibspec.2020.103130
dc.identifier.issn0924-2031
dc.identifier.urihttps://hdl.handle.net/1843/61589
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofVibrational Spectroscopy
dc.rightsAcesso Restrito
dc.subjectMaterial cerâmico
dc.subjectMicroondas
dc.subjectRaman, Efeito de
dc.subjectEspectroscopia de infravermelho
dc.subject.otherLISICON
dc.subject.otherLi2ZnGeO4
dc.subject.otherMicrowave dielectrics
dc.subject.otherRaman scattering
dc.subject.otherInfrared spectroscopy
dc.titleOptical-vibration properties of Li2ZnGeO4 dielectric ceramics
dc.typeArtigo de periódico
local.citation.spage103130
local.citation.volume110
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-4865-5052
local.identifier.orcidhttps://orcid.org/0000-0001-6820-0269
local.identifier.orcidhttps://orcid.org/0000-0001-7413-1087
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S092420312030134X

Arquivos

Licença do pacote

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
License.txt
Tamanho:
1.99 KB
Formato:
Plain Text
Descrição:
Baixar

Coleções

Artigo de Periódico

Logo UFMG