Resumo

VERA-SERNA, Pedro; BOLARIN-MIRO, Ana M.; SANCHEZ-DE JESUS, Félix  e  MARTINEZ-LUEVANOS, Antonia. Mecanosíntesis y caracterización de ferrita de manganeso. Superf. vacío [online]. 2011, vol.24, n.2, pp.34-38. ISSN 1665-3521.

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.

Palavras-chave : Mechanosynthesis; Ferrites; Manganese; Magnetic saturation; Characterization.

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