Preparation of Strontium Ferrite Powders by Mechanochemical Process

Abstract:

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Sr-ferrite powders were preparated by mechanochemical treatments using SrCO3 and Fe2O3 as raw materials. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometry (VSM) were employed to evaluated the morphologies, structures and magnetic properties of samples. The results indicated that the starting mixture became amorphous stage after ball-milled for 30h, and single phase SrFe12O19 could be obtained after annealed at 900°C for 2h. And the saturation magnetization was 58.2Am2/kg, and coercivity was 281.2 kA/m at room temperature. In comparison with the traditional firing method , the mechanochemical method benefited achieving the higher coercivity, which indicated that the samples had a better magnetic properties.

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Periodical:

Edited by:

Wu Fan

Pages:

1736-1740

DOI:

10.4028/www.scientific.net/AMM.110-116.1736

Citation:

J. H. Luo "Preparation of Strontium Ferrite Powders by Mechanochemical Process", Applied Mechanics and Materials, Vols. 110-116, pp. 1736-1740, 2012

Online since:

October 2011

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$35.00

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