Effect of Ce and Mg doping on LiZn ferrites hollow microspheres prepared by self-reactive quenching technology

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• 作者：Xudong Cai ; Baocai Xu ; Jianjiang Wang…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：27
• 期：2
• 页码：1328-1336
• 全文大小：1,721 KB
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• 作者单位：Xudong Cai (1)
  Baocai Xu (1)
  Jianjiang Wang (1)
  Baochen Li (2)
  Aihua Wu (3)
  Bing Wang (3)
  Haitao Gao (1)
  Liang Yu (1)
  Ze Li (1)
  
  1. Advanced Material Institute, Mechanical Engineering College, Heping West Road 97, Shijiazhuang, 050003, People’s Republic of China
  2. Scientific Research Department, Mechanical Engineering College, Shijiazhuang, 050003, People’s Republic of China
  3. Hebei Semiconductor Institute, Shijiazhuang, 050051, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1573-482X

文摘

Lithium–Zinc ferrite hollow microspheres (LiZn FHMs) doped with Ce and Mg were synthesized with Fe + Zn + Fe₂O₃ + O₂ + Li₂CO₃ reactive system by using self-reactive quenching technology. Effect of Ce and Mg doping on the surface morphology, phase structure, and microwave absorption properties of LiZn FHMs were investigated in detail. The results indicate that the surface morphology of LiZn FHMs shows little variation after Ce and Mg doping and is still composed of unnoticeable multi-shape crystal. The phases are mainly composed of Fe₃O₄, Fe₂O₃, Li_0.435Zn_0.195Fe_2.37O₄ and Li_0.5Fe_2.5O₄ without doping. The main phases remain unchanged with Mg doping, but CeO₂ appears in the phase components with Ce doping. It can be concluded that the microwave absorption properties are improved by Ce doping due to the variation of the ferromagnetic resonance frequency. But those of Mg doping are reduced due to the introduction of non-magnetic Mg2+.