Enhanced Microwave Absorption Performance of Amorphous Co100−xFex Nanoparticles
Metallic magnetic materials are extensively used to mitigate electromagnetic interference due to their high Curie temperatures and permeability. However, their high permittivity often hinders impedance-matching effectiveness, limiting their utility. In this study, amorphous cobalt-iron (Co<sub>100-x</sub>Fe<sub>x</sub>) alloy nanoparticles with relatively low permittivity were synthesized using a simple aqueous reduction method at room temperature. The effect of atomic ratio variation on the microwave absorption properties of these nanoparticles was investigated across 2-18 GHz. The amorphous Co<sub>100-x</sub>Fe<sub>x</sub> nanoparticles exhibited excellent electromagnetic wave absorption performance, achieving an effective absorption bandwidth of 5.6 GHz, a matching thickness of 2.60 mm, and a reflection loss of -42 dB.
Authors
- Fenglong Wang (ORCID: https://orcid.org/0000-0001-9834-9849)
- Zhaoyang Hou (ORCID: https://orcid.org/0000-0003-4117-8668)
- Hao Shen (ORCID: https://orcid.org/0000-0001-6111-4931)
- Hongjing Wu (ORCID: https://orcid.org/0000-0002-5575-3224)
- Chao An (ORCID: https://orcid.org/0009-0001-9956-1363)
- Zhen Wang (ORCID: https://orcid.org/0009-0002-5548-4367)
- Hongsheng Liang (ORCID: https://orcid.org/0000-0001-8367-6636)
Institutions
- Northwestern Polytechnical University (CN)
- Chang'an University (CN)
- Chongqing University of Arts and Sciences (CN)
Publication Details
- Journal
- Nanomaterials
- Published
- 2025-07-14
- DOI
- https://doi.org/10.3390/nano15141091
- Primary Topic
- Electromagnetic wave absorption materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China