Influence of the Mole Ratio, Sintering Condition and Particle Size on the Magnetic Properties of BaFe12O19 Synthesized by Ceramic Method

Barium ferrite (BaFe12O19) with different particle sizes were successfully synthesized by solid-state reaction (ceramic method) using locally available low cost alpha-Fe2O3 mixed with BaO2. The prepared samples were sintered in the temperature range of 950 degrees to 1200 degrees C for 1.5 to 6 h. The prepared products of barium ferrite were characterized by X-ray diffraction, a scanning electron microscope, and a vibrating sample magnetometer. The effect of mole ratio, sintering temperature, and time was studied. A further addition of 10% BaO2 to the mole ratio (BaO2:5.7Fe(2)O(3)), and removing the particle size <63 mu m, exhibits a pure phase BaFe12O19. The saturation magnetization reached the optimum value of M-s= similar to 67 emu/g with coercivity of 2596 Oe, under sintering temperature up to 1100 degrees C for 4.5 h.