Please use this identifier to cite or link to this item: https://repositorio.ufrn.br/handle/123456789/29359
Title: Synthesis and structural characterization of Sm-SrNickelates
Authors: Araújo, José Humberto de
Pimentel, Patrícia Mendonça
Oliveira, Rosane Maria Pessoa Betânio
Oliveira, Filipe Silva
Bagnato, Osmar Roberto
Melo, Dulce Maria de Araújo
Keywords: Nanostructures;Electron microscopy;X-ray diffraction;Ruddelsden-Popper
Issue Date: 25-Jun-2012
Publisher: David Publishing
Citation: PIMENTEL, P. M.; OLIVEIRA, R. M. P. B.; ARAÚJO, J. H.; OLIVEIRA, F. S.; BAGNATO, O. R.; MELO, D. M. A.. Synthesis and structural characterization of Sm-Sr nickelates. Journal of Chemistry and Chemical Engineering, v. 6, p. 526-530, 2012. Disponível em: https://webcache.googleusercontent.com/search?q=cache:OqsPKCL-FQQJ:https://sigaa.ufs.br/sigaa/verProducao%3FidProducao%3D334114%26key%3D7334fbe16b5a8a9a90ddd63a92e3d942+&cd=1&hl=pt-BR&ct=clnk&gl=br Acesso em: 23 jun 2020.
Portuguese Abstract: The main purpose of this work was to obtain Sm-Sr nickelates nanoparticles with Ruddelsden-Popper type structuresobtained by a simple process such as gelatin synthesis. The powders were calcinated at 900 ºC and characterized by X-ray diffraction,thermogravimetric analysis, scanning electron microscopy and high-resolution transmission electron microscopy techniques. Theeffect of chemical substitution of the Sm3+ by Sr2+ ions on the structural properties of the powders was studied. The Rietveld’smethod was successfully applied for determination of the quantitative phase analysis of the powders and revealed that the main phaseof the powders for different strontium content is of Ruddelsden-Popper type structure. A symmetry change from orthorhombic totetragonal is observed as increasing strontium
Abstract: The main purpose of this work was to obtain Sm-Sr nickelates nanoparticles with Ruddelsden-Popper type structuresobtained by a simple process such as gelatin synthesis. The powders were calcinated at 900 ºC and characterized by X-ray diffraction,thermogravimetric analysis, scanning electron microscopy and high-resolution transmission electron microscopy techniques. Theeffect of chemical substitution of the Sm3+ by Sr2+ ions on the structural properties of the powders was studied. The Rietveld’smethod was successfully applied for determination of the quantitative phase analysis of the powders and revealed that the main phaseof the powders for different strontium content is of Ruddelsden-Popper type structure. A symmetry change from orthorhombic totetragonal is observed as increasing strontium
URI: https://repositorio.ufrn.br/jspui/handle/123456789/29359
ISSN: 1934-7383
Appears in Collections:CCET - DFTE - Artigos publicados em periódicos
IQ - Artigos publicados em periódicos

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