Abstract
In this paper, M-type hexagonal barium ferrite powders are synthesized using the sol—gel method. A dried precursor heated in air is analyzed in the temperature range from 50 to 1200 °C using thermo-gravimetric analysis and differential scanning calorimetry. The effects of the additives and the cacinating temperature on the magnetic properties are investigated, and the results show that single-phase barium ferrite powders can be formed. After heat-treating at 950 °C for 4h with 3 wt% additive, the coercivity and saturation magnetization are found to be 440 Oe and 57.9 emu/g, respectively.
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