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Título: | Magnetic properties of spinel-type oxides NiMn2-xMexO4 |
Autor: | Gautier, J.L.; Moure Jiménez, Carlos CSIC; Bodenez, V.; Cailleaux, X.; Ortiz, Juan; Peña, Octavio; Piriou, B.; Zúñiga, G.; Lisboa-Filho, P. N. | Palabras clave: | Magnetic oxides Spinels Ferrimagnetic properties Magnetic exchange |
Fecha de publicación: | 2005 | Editor: | Sociedad Chilena de Química | Citación: | J. Chil. Chem. Soc., 50, N° 3 (2005), págs: 617-623 | Resumen: | New materials, based on the well-known spinel compound NiMn2O4, have been synthesized and characterized from the magnetic point of view. The manganese cation was partially substituted in the general formula NiMn2-xMexO4 , by nonmagnetic and magnetic elements, such as Me = Ga, Zn, Ni and Cr (0 x 1). Prior to the determination of their magnetic properties, the non-substituted spinel NiMn2O4 was carefully characterized and studied as a function of the oxygen stoichiometry, based on the influence of the annealing atmosphere and quenching rate. The ferrimagnetic character was observed in all samples, with a paramagnetic-to-ferromagnetic transition temperature Tc stabilized at 110 K, and well defined long-range antiferromagnetic interactions at lower temperatures, which depend on the applied field and the substitute concentration | URI: | http://hdl.handle.net/10261/2180 | ISSN: | 0717-9707 |
Aparece en las colecciones: | (ICV) Artículos |
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