The structural and magnetic properties of barium ferrite powders prepared by the solben gel method |
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| Authors: | Li Jie Zhang Huai-Wu Li Yuan-Xun Liu Ying-Li and Ma Yan-Bing |
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| Institution: | School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| 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 ℃ 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 ℃ 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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| Keywords: | barium ferrite sol-gel method powder magnetic property |
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