Disorder-induced symmetry lowering in Ba(Y1/2Nb1/2)O3 ceramics probed by Raman spectroscopy.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorDias, Anderson-
Autor(es): dc.creatorSá, Rodrigo Gomes-
Autor(es): dc.creatorMoreira, Roberto Luiz-
Data de aceite: dc.date.accessioned2025-08-21T15:16:02Z-
Data de disponibilização: dc.date.available2025-08-21T15:16:02Z-
Data de envio: dc.date.issued2017-05-22-
Data de envio: dc.date.issued2017-05-22-
Data de envio: dc.date.issued2008-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/7777-
Fonte completa do material: dc.identifierhttp://onlinelibrary.wiley.com/doi/10.1002/jrs.2043/full-
Fonte completa do material: dc.identifierhttps://doi.org/10.1002/jrs.2043-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1008510-
Descrição: dc.descriptionThis work investigates the evolution of the crystal structure of microwave-hydrothermal synthesized Ba(Y1/2Nb1/2)O3 powders as a function of firing temperature by Raman spectroscopy. The samples were produced at 200 °C and fired at temperatures ranging from 600 to 1600 °C. Raman spectra were obtained at room temperature for all samples and the results showed that materials fired at 1600 °C exhibited tetragonal (I4/m or C5 4h) structure, whereas those fired at lower temperatures exhibited the triclinic (P1 or C1 i ) structure. The results were compared with those observed for ceramics obtained by conventional solid-state methods. It is believed that the lowering of the symmetry verified in materials fired below 1600 °C is a consequence of the local disorder of Y+3 and Nb+5 ions in octahedral sites.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectMicrowave-hydrothermal-
Palavras-chave: dc.subjectRaman spectroscopy-
Palavras-chave: dc.subjectCeramics-
Palavras-chave: dc.subjectMicrowave dielectrics-
Título: dc.titleDisorder-induced symmetry lowering in Ba(Y1/2Nb1/2)O3 ceramics probed by Raman spectroscopy.-
Aparece nas coleções:Repositório Institucional - UFOP

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