Preparation of Manganese Ferrite Powders by Mechanochemical Process
Mn-ferrite powders were prepared by mechanochemical treatments using MnO2 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 and structures of samples. The results indicated that the starting mixture became amorphous stage after ball-milled for 40h, and single phase MnFe2O4 could be obtained after annealed at 1200°C for 2h. In comparison with the traditional firing method , the mechanochemical method benefited achieving the higher saturation magnetization, which indicated that the samples had a better magnetic properties.
Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu
J. H. Luo "Preparation of Manganese Ferrite Powders by Mechanochemical Process", Advanced Materials Research, Vols. 284-286, pp. 2268-2271, 2011