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Peer-reviewedCC BY 4.0Nanomaterials

Natural Resonance Regulation of CexBa1-xCo2Fe16O27 Hexaferrite via In Situ Doping Strategy for Efficient Microwave Absorption

  • Mian Sun1
  • Yan Sun1
  • Linghua Tan2
  • Leichong Wang3,4
4 affiliations
  1. 1School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  2. 2School of Safety Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  3. 3Advanced Engineering Technology Research Institute of Zhongshan City, Wuhan University of Technology, Zhongshan 528437, China
  4. 4Precision Concrete New Material Technology (Guangdong) Co., Ltd., Zhongshan 528400, China
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Abstract

Recently, hexagonal ferrites (hexaferrites) have attracted increasing attention for high-performance microwave absorption owing to their favorable magnetic and dielectric properties. However, their natural resonance in the GHz region limits their application in narrow-band high-frequency absorbers. Herein, Ce3+-doped BaCo2Fe16O27(CBCF) hexagonal ferrite sheets with varying Ce concentrations were successfully synthesized via a sol–gel method combined with high-temperature calcination. With increasing Ce3+ content, the diffraction peaks shifted towards higher angles, and the magnetic parameters of the W-type hexaferrite were effectively improved. The saturation magnetization increased from 75.66 to 83.73 emu/g. Notably, the Ce0.075Ba0.925Co2Fe16O27(C0.075BCF) sample exhibited excellent broadband absorption performance, achieving a minimum reflection loss (RL) of −18.40 dB at 14.92 GHz and an effective absorption bandwidth of 5.52 GHz. The microwave absorption performance was effectively controlled by tuning the natural resonance frequency of the W-type hexaferrite via Ce doping. This study provides a new strategy for designing broadband microwave absorbers by modulating the natural resonance frequency.

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Cite

BibTeXRIS
BibTeX
@article{sun2026natural,
  title = {{Natural Resonance Regulation of CexBa1-xCo2Fe16O27 Hexaferrite via In Situ Doping Strategy for Efficient Microwave Absorption}},
  author = {Mian Sun and Yan Sun and Linghua Tan and Leichong Wang},
  journal = {Nanomaterials},
  year = {2026},
  month = oct,
  doi = {10.3390/nano16211356},
  url = {https://www.mdpi.com/2079-4991/16/21/1356},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Natural Resonance Regulation of CexBa1-xCo2Fe16O27 Hexaferrite via In Situ Doping Strategy for Efficient Microwave Absorption
AU  - Mian Sun
AU  - Yan Sun
AU  - Linghua Tan
AU  - Leichong Wang
PY  - 2026
DA  - 2026/10/25
JO  - Nanomaterials
DO  - 10.3390/nano16211356
UR  - https://www.mdpi.com/2079-4991/16/21/1356
AB  - Recently, hexagonal ferrites (hexaferrites) have attracted increasing attention for high-performance microwave absorption owing to their favorable magnetic and dielectric properties. However, their natural resonance in the GHz region limits their application in narrow-band high-frequency absorbers. Herein, Ce3+-doped BaCo2Fe16O27(CBCF) hexagonal ferrite sheets with varying Ce concentrations were successfully synthesized via a sol–gel method combined with high-temperature calcination. With increasing Ce3+ content, the diffraction peaks shifted towards higher angles, and the magnetic parameters of the W-type hexaferrite were effectively improved. The saturation magnetization increased from 75.66 to 83.73 emu/g. Notably, the Ce0.075Ba0.925Co2Fe16O27(C0.075BCF) sample exhibited excellent broadband absorption performance, achieving a minimum reflection loss (RL) of −18.40 dB at 14.92 GHz and an effective absorption bandwidth of 5.52 GHz. The microwave absorption performance was effectively controlled by tuning the natural resonance frequency of the W-type hexaferrite via Ce doping. This study provides a new strategy for designing broadband microwave absorbers by modulating the natural resonance frequency.
SN  - 2079-4991
ER  -