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<p>With the development and use of the electronic and electrical equipment, solving electromagnetic pollution has become a top priority for human health. In this work, ternary co-doped (Ca<sup>2</sup>⁺, Cu<sup>2</sup>⁺, Sn<sup>4</sup>⁺) ions were incorporated into M-type hexagonal barium ferrite (Ba<sub>1-x</sub>Ca<sub>x</sub>Fe<sub>11.6</sub>Cu<sub>0.2</sub>Sn<sub>0.2</sub>O<sub>27</sub>), and the effects of varying Ca<sup>2</sup>⁺ doping levels on the crystal structure, surface morphology, and electromagnetic characteristics were thoroughly investigated. Structural characterizations confirms that Ca<sup>2+</sup> substitutes Ba<sup>2+</sup> sites, decreasing the grain size and lattice values while increasing the lattice strain. At x = 0.15, the Ba<sub>1-x</sub>Ca<sub>x</sub>Fe<sub>11.6</sub>Cu<sub>0.2</sub>Sn<sub>0.2</sub>O<sub>27</sub> ferrite achieves the maximum value of saturation magnetization of 67.7&#xa0;emu/g, the highest RL<sub>min</sub> value of -44.2&#xa0;dB@14.3&#xa0;GHz and effective absorption bandwidth of 3.04&#xa0;GHz, showing potential as an effective material for absorption applications.</p>

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Ca2+-Cu2+-Sn4+ co-doped M-type hexagonal barium ferrite for enhanced microwave absorption efficiency

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Kangrui Ma,
  • Jiawen Wu,
  • Derong Wei,
  • Jin Chen,
  • Xuanting Rong,
  • Ruyun Ding,
  • Jia Gu,
  • Xuetiao Ma,
  • Hui Zheng

摘要

With the development and use of the electronic and electrical equipment, solving electromagnetic pollution has become a top priority for human health. In this work, ternary co-doped (Ca2⁺, Cu2⁺, Sn4⁺) ions were incorporated into M-type hexagonal barium ferrite (Ba1-xCaxFe11.6Cu0.2Sn0.2O27), and the effects of varying Ca2⁺ doping levels on the crystal structure, surface morphology, and electromagnetic characteristics were thoroughly investigated. Structural characterizations confirms that Ca2+ substitutes Ba2+ sites, decreasing the grain size and lattice values while increasing the lattice strain. At x = 0.15, the Ba1-xCaxFe11.6Cu0.2Sn0.2O27 ferrite achieves the maximum value of saturation magnetization of 67.7 emu/g, the highest RLmin value of -44.2 dB@14.3 GHz and effective absorption bandwidth of 3.04 GHz, showing potential as an effective material for absorption applications.