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<p>The rapid development of electronic devices and communication technologies has resulted in increasingly severe electromagnetic-wave (EW) pollution. Efficient EW absorption (EWA) materials are essential to mitigate their impact and ensure human safety in modern society. Fe-based EWA materials have garnered significant attention owing to their cost-effectiveness, high saturation magnetization, and superior magnetic loss capabilities. This review begins with an introduction to Fe-based EWA materials, followed by a brief description of their EWA mechanisms. Various pristine Fe-based absorbers, such as carbonyl iron powder, ferrite-based materials, Fe-based alloys, Fe-based high-entropy alloys (HEAs), and Fe-based layered ternary transition-metal borides, have been systematically reviewed. Key strategies to enhance the performance of Fe-based composite absorbers, including doping, <i>in-situ</i> oxidation, porous structuring, and composite construction, are critically discussed. Finally, the review presents a summary and future perspectives in this field, highlighting the synergy between Fe-based and high-entropy materials in advancing next-generation EWA for applications in stealth technology, wearable electronics, and harsh environments.</p>

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Advances in Fe-based electromagnetic wave absorbers: Multiscale engineering from atomic defects to macroscopic architectures for performance optimization

  • 期刊论文

  • 发表日期：

    2026年2月23日

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  • Xixi Luo,
  • Hui Xie,
  • Yi Ma,
  • Di Lan,
  • Guanglei Wu,
  • Zirui Jia

摘要

The rapid development of electronic devices and communication technologies has resulted in increasingly severe electromagnetic-wave (EW) pollution. Efficient EW absorption (EWA) materials are essential to mitigate their impact and ensure human safety in modern society. Fe-based EWA materials have garnered significant attention owing to their cost-effectiveness, high saturation magnetization, and superior magnetic loss capabilities. This review begins with an introduction to Fe-based EWA materials, followed by a brief description of their EWA mechanisms. Various pristine Fe-based absorbers, such as carbonyl iron powder, ferrite-based materials, Fe-based alloys, Fe-based high-entropy alloys (HEAs), and Fe-based layered ternary transition-metal borides, have been systematically reviewed. Key strategies to enhance the performance of Fe-based composite absorbers, including doping, in-situ oxidation, porous structuring, and composite construction, are critically discussed. Finally, the review presents a summary and future perspectives in this field, highlighting the synergy between Fe-based and high-entropy materials in advancing next-generation EWA for applications in stealth technology, wearable electronics, and harsh environments.