Vera-Serna Pedroª , Bolarín-Miró Ana M.ª, Sánchez-De Jesús Félixª y Martínez-Luévanos Antoniab
ª Universidad Autónoma del Estado de Hidalgo, Área Académica de Ciencias de la Tierra y Materia Carr. Pachuca Tulancingo Km. 4.5, 42184, Mineral de la Reforma, Hidalgo, México. * correo: pedro_vsp@yahoo.com
b Universidad Autónoma de Coahuila, Cuerpo Académico de Materiales Cerámicos Blvd. V. Carranza y José Cárdenas, 25265 Saltillo, Coahuila, México.
Recibido: 12 de enero de 2011;
Aceptado: 26 de abril de 2011
Abstract
Mechanosynthesis process was applied to obtain manganese ferrite with formula MnFe2O4, powder oxides of MnO (99% purity) and Fe2O3 (99% purity) was used as raw materials. The high energy milling was performed under air atmosphere using stainless steel vials and hardness steel balls. X-ray Diffraction, Scanning Electronic Microscopy, Termogravimetric Analysis, Miliohmmeter (four-point resistivity measurement), Light scattering and Magnetometer were used to characterize the synthesis powders. The results shown that the MnFe2O4 was obtained at 12 hours of milling time, the material present saturation magnetic of 48 emu/g and electric conductivity of 0.033 S m-1.
Keywords: Mechanosynthesis; Ferrites; Manganese; Magnetic saturation; Characterization.
Resumen
Mediante mecanosíntesis se obtuvo ferrita de manganeso MnFe2O4, se utilizaron polvos de MnO y Fe2O3 como materiales de partida. La síntesis se llevo a cabo utilizando un molino de alta energía, viales de acero inoxidable, bolas de acero endurecido y atmósfera de aire. Para la caracterización se empleó Difracción de Rayos X, Microscopía Electrónica de Barrido, Análisis Termogravimétrico, Miliohmetro (medición de resistividad de cuatro puntos), Dispersión de luz y un Magnetómetro. Los resultados muestran que después de 12 horas de molienda se obtiene MnFe2O4, el producto obtenido presenta saturación magnética de 48 emu/g y conductividad eléctrica de 66 S m-1.
Palabras Clave: Mecanosíntesis; Ferrita; Manganeso; Magnética Saturación; Caracterización.
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Nota
The Editors thank to the Physics Department of the Centro de Investigación y de Estudios Avanzados del IPN for the support in the publication of this issue, and the cooperation of M en C. Alejandra García Sotelo and Eng. Erasmo Gómez.
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