Incipient crystallization of transition-metal tungstates under microwaves probed by Raman scattering and transmission electron microscopy.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorSiqueira, Kisla Prislen Félix-
Autor(es): dc.creatorDias, Anderson-
Data de aceite: dc.date.accessioned2025-08-21T15:58:29Z-
Data de disponibilização: dc.date.available2025-08-21T15:58:29Z-
Data de envio: dc.date.issued2017-05-22-
Data de envio: dc.date.issued2017-05-22-
Data de envio: dc.date.issued2011-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/7770-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s11051-011-0248-8-
Fonte completa do material: dc.identifierhttps://doi.org/10.1007/s11051-011-0248-8-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1028992-
Descrição: dc.descriptionMicrowave synthesis was used to produce nanosized transition-metal tungstates in environmentally friendly conditions not yet reported by the literature: 110 and 150 C, for times of 10 and 20 min. X-ray diffraction evidenced incipient crystallized materials, while transmission electron microscopy indicates nanostructured regions of about 2–5 nm inside an amorphous matrix. Raman spectroscopy was used to probe short-range ordering in the achieved samples and also to obtain a reliable set of spectra containing all the Raman-active bands predicted by group-theory calculations. The vibrational spectra showed no extra feature, indicating that the microwave processing was able to produce short-range ordered materials without tetrahedral distortions. These distortions are frequently reported when commercially modified kitchen microwave units are employed. In this work, the syntheses were conducted in a commercial apparatus especially designed for fully controlled temperature–time–pressure conditions.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectMicrowave-
Palavras-chave: dc.subjectHydrothermal-
Palavras-chave: dc.subjectTungstates-
Palavras-chave: dc.subjectMultiferroic-
Título: dc.titleIncipient crystallization of transition-metal tungstates under microwaves probed by Raman scattering and transmission electron microscopy.-
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