中国物理B ›› 2012, Vol. 21 ›› Issue (1): 17501-017501.doi: 10.1088/1674-1056/21/1/017501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

The structural and magnetic properties of barium ferrite powders prepared by the sol–gel method

李颉, 张怀武, 李元勋, 刘颖力, 马岩冰   

  1. School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2011-07-19 修回日期:2011-09-01 出版日期:2012-01-15 发布日期:2012-01-20
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2007CB310407), the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (Grant No. 61021061), the National Natural Youth Fund of China (G

The structural and magnetic properties of barium ferrite powders prepared by the sol–gel method

Li Jie(李颉)†, Zhang Huai-Wu(张怀武), Li Yuan-Xun(李元勋), Liu Ying-Li(刘颖力), and Ma Yan-Bing(马岩冰)   

  1. School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2011-07-19 Revised:2011-09-01 Online:2012-01-15 Published:2012-01-20
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2007CB310407), the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (Grant No. 61021061), the National Natural Youth Fund of China (G

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摘要： 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.

关键词: barium ferrite, sol-gel method, powder, magnetic property

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.

Key words: barium ferrite, sol-gel method, powder, magnetic property

中图分类号:  (Magnetization curves, hysteresis, Barkhausen and related effects)

  • 75.60.Ej
75.75.Lf (Electronic structure of magnetic nanoparticles) 75.60.Nt (Magnetic annealing and temperature-hysteresis effects)