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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

回流法制备纳米 NiZn铁氧体及成相机理研究

钟海胜1, 李强1, 张一玲2, 钟志锋1, 张阳1   

  1. (1. 清华大学化学系, 北京 100084; 2. 清华大学材料科学与工程系, 北京 100084)
  • 收稿日期:2005-11-22 修回日期:2006-02-08 出版日期:2006-11-20 网络出版日期:2006-11-20

Nanocrystalline NiZn Ferrite Prepared by Refluxing Method and Mechanism of Spinel Formation

ZHONG Hai-Sheng1, LI Qiang1, ZHANG Yi-Ling2, ZHONG Zhi-Feng1, ZHANG Yang1
  

  1. (1. Department of Chemistry, Tsinghua University, Beijing 100084, China; 2. Department of Material Science and Engineering , Tsinghua University, Beijing 100084, China)
  • Received:2005-11-22 Revised:2006-02-08 Published:2006-11-20 Online:2006-11-20

PDF (PC)

1688

被引次数

21

摘要：

采用回流法合成了纳米级的尖晶石相NiZn铁氧体. 通过XRD测试和回流液反应过程中pH值变化分析, 确定了最佳的回流反应时间为6h, 同时对回流反应的机理进行了初步的研究. 透射电镜结果显示NiZn铁氧体的颗粒为10~30nm, 高分辨透射电镜分析表明回流法合成的铁氧体为单一尖晶石相. 用VSM研究了纳米NiZn铁氧体粉料的软磁特性.

关键词: 回流法, NiZn铁氧体, 尖晶石相

Abstract:

Nanocrystalline NiZn ferrite powders with spinel structure were prepared by a new chemical method---refluxing method. Refluxing time and the mechanism of NiZn ferrite spinel formation were discussed based on the XRD analysis and pH value measurement. The results show that the optimum refluxing time is 6h. The particle sizes of Ni0.5Zn0.5Fe2O4 nano-powders prepared by the refluxing method are about 10~20nm with TEM analysis, and the results of HRTEM AND SAED approve that Ni0.5Zn0.5Fe2O4 nano-powders prepared are with the single spinel phase. VSM results reveal that the prepared Ni0.5Zn0.5Fe2O4 powder has typical soft magnetic characteristics.

Key words: refluxing method, NiZn ferrite, spinel

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