Nanoferrites of nickel doped with cobalt: influence of Co2+ on the structural and magnetic properties

Araújo, José Humberto de; Rodrigues, A. P.G.; Gomes, Danielle Karinne Souza; Melo, Daniel Macedo A.; Oliveira, N.A.S.; Braga, Renata M.

Nanoferrites of nickel doped with cobalt: influence of Co2+ on the structural and magnetic properties

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dc.contributor.author	Araújo, José Humberto de
dc.contributor.author	Rodrigues, A. P.G.
dc.contributor.author	Gomes, Danielle Karinne Souza
dc.contributor.author	Melo, Daniel Macedo A.
dc.contributor.author	Oliveira, N.A.S.
dc.contributor.author	Braga, Renata M.
dc.date.accessioned	2020-07-02T19:50:48Z
dc.date.available	2020-07-02T19:50:48Z
dc.date.issued	2015-01-15
dc.description.resumo	Nanoferrites of nickel substituted with cobalt of composition Ni1−xCoxFe2O4 (0≤x≤0.75), were synthesized by combustion reaction assisted in microwaves. The influence of the substitution of Ni2+ by Co2+ content and the concentration of Co2+ in the structural and magnetic properties was investigated. The powders were prepared by combustion according to the concept of chemical propellants and heated in a microwave oven with a power of 7000 kW. The synthesized powders were characterized by absorption spectroscopy in the infrared region (FTIR), X-ray diffraction (XRD) together with Rietveld refinement, surface area (BET) method, scanning electron microscopy (MEV) and magnetic measurements (MAV). The results indicated that it was possible to obtain nickel ferrite doped with cobalt in all compositions and that an increase of cobalt concentration caused an increase in particle size (9.78–21.63 nm), a reduction in surface area, and reduction in magnetic concentrations greater than 50%	pt_BR
dc.identifier.citation	RODRIGUES, A.P.G.; GOMES, D.K.S. ; ARAÚJO, J. H.; MELO, D.M.A.; OLIVEIRA, N.A.S.; BRAGA, R.M. . Nanoferrites of nickel doped with cobalt: Influence of Co2+ on the structural and magnetic properties. Journal of Magnetism and Magnetic Materials, v. 374, p. 748-754, 2015. Disponível em: https://www.sciencedirect.com/science/article/pii/S0304885314008671?via%3Dihub#! Acesso em: 25 jun 2020. https://doi.org/10.1016/j.jmmm.2014.09.045	pt_BR
dc.identifier.doi	10.1016/j.jmmm.2014.09.045
dc.identifier.issn	0304-8853
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29400
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Ferrite	pt_BR
dc.subject	Spinel	pt_BR
dc.subject	Nickel	pt_BR
dc.subject	Cobalt	pt_BR
dc.subject	Combustion	pt_BR
dc.subject	Magnetic propertie	pt_BR
dc.title	Nanoferrites of nickel doped with cobalt: influence of Co2+ on the structural and magnetic properties	pt_BR
dc.type	article	pt_BR