Abstract:The barium ferrite was prepared by mechanical alloying combined with microwave sintering, and the organization and properties of the barium ferrite preparation process were analyzed by X-ray diffractometer (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and vibrating sample magnetometer (VSM). The experiments show that: at the beginning of high-energy ball milling, the particle size decreases and the powder is refined; with the extension of the ball milling time, part of BaCO3 solid solution is formed in Fe2O3; the material with 40h of high-energy ball milling is sintered by microwave sintering at 900℃, the sintered material is uniformly organized, the grains are fully grown, there is obvious hexagonal structure generated, the saturation magnetization intensity is 53.7emu/g, the coercivity is 5617.9Oe; compared with conventional sintering, the magnetic properties of barium ferrite prepared by microwave sintering are similar, but the sintering temperature is reduced by 100℃, and the particle size of the sample is more uniform and the sintering time is shorter.