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Rare Metals

, Volume 36, Issue 3, pp 202–204 | Cite as

Structure and magnetic properties of NiCuZn ferrite materials with La doping

  • Yuan-Xun Li
  • Jie Li
  • Qiang Li
  • Guo-Liang Yu
  • Huai-Wu Zhang
Article

Abstract

Ni0.3Cu0.07Zn0.63Fe2-x La x O4 ferrites were prepared by solid phase method and sintered at 1,150 °C for 6 h. The phase formation, microstructure, and magnetic properties of samples were investigated. With doping of La3+, the samples contain two phases: LaFeO3 and NiCuZn ferrites. Scanning electron microscope (SEM) image shows that La doping constrains the growth of NiCuZn ferrite, which is more uniform. La doping improves magnetic properties of NiCuZn ferrite when x ≤ 0.03. The saturation magnetization (M s) increases first; when x = 0.03, the highest value is 75.35 A·m2·kg-1. The permeability increases to the maximum value with frequency and then decreases with the concentration of La3+ increasing. When x = 0.03, the maximum value of real permeability at 1 MHz is 333.5, and the loss angle tangent (tanδ) is not more than 0.02. La doping improves the properties of NiCuZn ferrite, which can be applied to low-frequency filters.

Keywords

NiCuZn ferrite La doping Properties 

Notes

Acknowledgments

This work was financially supported by the National Basic Research Program of China (No. 2012CB933100), the National Natural Science Foundation of China (Nos. 61001025 and 51132003), and the Second Item of Strongpoint Industry of Guangdong Province (No.2012A090100001).

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Copyright information

© The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Yuan-Xun Li
    • 1
    • 2
  • Jie Li
    • 1
  • Qiang Li
    • 1
  • Guo-Liang Yu
    • 1
  • Huai-Wu Zhang
    • 1
  1. 1.State Key Laboratory of Electronic Thin Films and Integrated DevicesUniversity of Electronic Science and Technology of ChinaChengduChina
  2. 2.Institute of Electronic and Information Engineering in DongguanUniversity of Electronic Science and Technology of ChinaDongguanChina

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