Abstract
Li0.5xMn0.4Ni0.6–xFe2+0.5xO4 (0.0≤x≤0.3) was obtained by calcining oxalates precursor over 600°C in air. The precursor and its calcined products were characterized by thermogravimetry and differential scanning calorimetry, X-ray powder diffraction, scanning electron microscopy, and vibrating sample magnetometer. A high-crystallized Li0.5xMn0.4Ni0.6–xFe2+0.5xO4 with a cubic structure was obtained when the precursor was calcined at 600°C in air for 2h. The specific saturation magnetization of Li0.5xMn0.4Ni0.6–xFe2+0.5xO4 depends on the composition and calcination temperature. Li0.1Mn0.4Ni0.4Fe2.1O4 obtained at 600°C had the highest specific saturation magnetization value, 57.94emu/g. However, Mn0.4Ni0.6Fe2O4 obtained at 600°C had the highest coercivity value, 130.32Oe.
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