Enhanced Microwave Absorption Performance of Amorphous Co<sub>100−x</sub>Fe<sub>x</sub> 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>...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/14/1091 |
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| author | Zhen Wang Chao An Fenglong Wang Hongsheng Liang Zhaoyang Hou Hao Shen Hongjing Wu |
| author_facet | Zhen Wang Chao An Fenglong Wang Hongsheng Liang Zhaoyang Hou Hao Shen Hongjing Wu |
| author_sort | Zhen Wang |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-267a4eee1ff84207a7d00a2fb6ba9d22 |
| institution | DOAJ |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-267a4eee1ff84207a7d00a2fb6ba9d222025-08-20T03:08:06ZengMDPI AGNanomaterials2079-49912025-07-011514109110.3390/nano15141091Enhanced Microwave Absorption Performance of Amorphous Co<sub>100−x</sub>Fe<sub>x</sub> NanoparticlesZhen Wang0Chao An1Fenglong Wang2Hongsheng Liang3Zhaoyang Hou4Hao Shen5Hongjing Wu6Department of Applied Physics, School of Science, Chang’an University, Xi’an 710064, ChinaSchool of Intelligent Manufacturing Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, ChinaDepartment of Applied Physics, School of Science, Chang’an University, Xi’an 710064, ChinaDepartment of Applied Physics, School of Science, Chang’an University, Xi’an 710064, ChinaDepartment of Applied Physics, School of Science, Chang’an University, Xi’an 710064, ChinaDepartment of Applied Physics, School of Science, Chang’an University, Xi’an 710064, ChinaMOE Key Laboratory of Material Physics and Chemistry Under Extraordinary, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710072, ChinaMetallic 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.https://www.mdpi.com/2079-4991/15/14/1091amorphous Co<sub>100−x</sub>Fe<sub>x</sub> nanoparticlescomplex permittivity and permeabilitymicrowave absorption properties |
| spellingShingle | Zhen Wang Chao An Fenglong Wang Hongsheng Liang Zhaoyang Hou Hao Shen Hongjing Wu Enhanced Microwave Absorption Performance of Amorphous Co<sub>100−x</sub>Fe<sub>x</sub> Nanoparticles Nanomaterials amorphous Co<sub>100−x</sub>Fe<sub>x</sub> nanoparticles complex permittivity and permeability microwave absorption properties |
| title | Enhanced Microwave Absorption Performance of Amorphous Co<sub>100−x</sub>Fe<sub>x</sub> Nanoparticles |
| title_full | Enhanced Microwave Absorption Performance of Amorphous Co<sub>100−x</sub>Fe<sub>x</sub> Nanoparticles |
| title_fullStr | Enhanced Microwave Absorption Performance of Amorphous Co<sub>100−x</sub>Fe<sub>x</sub> Nanoparticles |
| title_full_unstemmed | Enhanced Microwave Absorption Performance of Amorphous Co<sub>100−x</sub>Fe<sub>x</sub> Nanoparticles |
| title_short | Enhanced Microwave Absorption Performance of Amorphous Co<sub>100−x</sub>Fe<sub>x</sub> Nanoparticles |
| title_sort | enhanced microwave absorption performance of amorphous co sub 100 x sub fe sub x sub nanoparticles |
| topic | amorphous Co<sub>100−x</sub>Fe<sub>x</sub> nanoparticles complex permittivity and permeability microwave absorption properties |
| url | https://www.mdpi.com/2079-4991/15/14/1091 |
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