Enhanced coercivity of La–Co substituted Sr–Ca hexaferrite fabricated by improved ceramics process

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• 作者：Li Yuping ; Wu Yunfei ; Bao Daxin
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：27
• 期：5
• 页码：4433-4436
• 全文大小：774 KB
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• 作者单位：Li Yuping (1) (2)
  Wu Yunfei (3)
  Bao Daxin (3)
  
  1. School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing, 211167, China
  2. Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing, 211167, China
  3. Hengdian Group DMEGC Magnetics Co., Ltd, Jinhua, 322118, 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

In order to fabricate high magnetic performance La–Co substituted Sr–Ca hexagonal ferrites, an improved ceramics process was proposed in this study. The particle size of the ferrite powder was measured by laser diffraction particle size analyzer. The microstructures of the sintered ferrites were observed by scanning electron microscopy. The magnetic properties of the sintered ferrite magnets were measured by B–H loop recorder. The results show that, sub-micrometer ferrite powder with narrow particle size distribution could be produced by microwave reheating–remilling treatment. Ferrite magnet with fine grained microstructure and enhanced coercivity could be synthesized by using the powder as precursor.