Magnetic behavior of nanocrystalline MnCo2O4 spinels

Araújo, José Humberto de; Borges, Filipe Martel de Magalhães; Melo, Dulce Maria de Araújo; Câmara, M. S. A.; Martinelli, Antonio Eduardo; Soares, João Maria; Cabral, F. A. O.

Magnetic behavior of nanocrystalline MnCo2O4 spinels

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dc.contributor.author	Araújo, José Humberto de
dc.contributor.author	Borges, Filipe Martel de Magalhães
dc.contributor.author	Melo, Dulce Maria de Araújo
dc.contributor.author	Câmara, M. S. A.
dc.contributor.author	Martinelli, Antonio Eduardo
dc.contributor.author	Soares, João Maria
dc.contributor.author	Cabral, F. A. O.
dc.date.accessioned	2020-06-09T17:28:44Z
dc.date.available	2020-06-09T17:28:44Z
dc.date.issued	2006-07
dc.description.resumo	A series of powders with different particle sizes of the spinel MnCo2O4 was synthesized by the Pechini method. The resulting precursor was calcined between 400 and 900o and characterized by thermogravimetric analyses (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and magnetization measurements. TGA analysis showed a loss of mass in the region from 200 to 650oC and stability after this. XRD patterns showed an increase of the crystallite size with calcination temperature. Magnetization measurements on the sample calcined at 900oC showed an unusual behavior of the hysteresis curve and irreversibility of the magnetization with field cooled (FC) and zero field cooled (ZFC) procedures. An evolution of this behavior was observed with increasing crystallite size	pt_BR
dc.identifier.citation	BORGES, F; MELO, D; CAMARA, M; MARTINELLI, A; SOARES, J. H.; ARAUJO, J; CABRAL, F. Magnetic behavior of nanocrystalline MnCo2O4 spinels. Journal of Magnetism and Magnetic Materials, v. 302, n.2, p. 273-277, 2006. Disponivel em: https://www.sciencedirect.com/science/article/abs/pii/S0304885305007535?via%3Dihub#!. Acesso em: 01 jun 2020. https://doi.org/10.1016/j.jmmm.2005.09.017.	pt_BR
dc.identifier.doi	10.1016/j.jmmm.2005.09.017
dc.identifier.issn	0304-8853
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29190
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	Ferrimagnet	pt_BR
dc.subject	Magnetization	pt_BR
dc.subject	Magnetic domains	pt_BR
dc.subject	Nanoparticles	pt_BR
dc.subject	Spin glass	pt_BR
dc.title	Magnetic behavior of nanocrystalline MnCo2O4 spinels	pt_BR
dc.type	article	pt_BR