Dielectric Behavior of alpha-Ag2WO4 and its Huge Dielectric Loss Tangent

Registro completo de metadados
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorJacomaci, Natalia-
Autor(es): dc.creatorSilva Junior, Euripedes-
Autor(es): dc.creatorBorges de Oliveira, Fernando Modesto-
Autor(es): dc.creatorLongo, Elson-
Autor(es): dc.creatorZaghete, Maria Aparecida-
Data de aceite: dc.date.accessioned2021-03-11T01:12:43Z-
Data de disponibilização: dc.date.available2021-03-11T01:12:43Z-
Data de envio: dc.date.issued2019-10-04-
Data de envio: dc.date.issued2019-10-04-
Data de envio: dc.date.issued2019-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/1980-5373-MR-2019-0058-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/184691-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/184691-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionProcesso FAPESP: 2013/07296-2-
Descrição: dc.descriptionThe microwave-assisted hydrothermal method was used to obtain alpha-Ag2WO4. Rietveld refinement confirmed that alpha-Ag2WO4 is stable in the orthorhombic phase, without secondary phase. However, field-effect scanning electron microscope analysis showed that alpha-Ag2WO4 nanorods surfaces contain silver nanoparticles, confirmed by the X-ray photoelectron spectroscopy by the peak observed at 374.39 eV In addition to metallic Ag, other Ag oxidation states were also observed on the surface. Hence, Ag (I) as Ag2O and Ag (I) as Ag(2)WO(4 )also were identified. DC measurements exhibited a high capacity of charge storage, nevertheless, with a large loss tangent (0.12 mu C.cm(-2).V-1) and no residual polarization for the voltage range between -100 V and +100 V. AC measurements at frequencies less than 275 Hz, revealed that ionic polarization is dominant, whereas at frequencies higher than 275 Hz, the electronic behavior predominates. The potential of electromagnetic energy conversion in thermal was observed from loss tangent analysis.-
Formato: dc.format10-
Idioma: dc.languageen-
Publicador: dc.publisherUniv Fed Sao Carlos, Dept Engenharia Materials-
Relação: dc.relationMaterials Research-ibero-american Journal Of Materials-
Direitos: dc.rightsopenAccess-
Palavras-chave: dc.subjectSilver tungstate nanorods-
Palavras-chave: dc.subjectdielectric behavior-
Palavras-chave: dc.subjectionic and electronic polarization-
Título: dc.titleDielectric Behavior of alpha-Ag2WO4 and its Huge Dielectric Loss Tangent-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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