One-Dimensional Magnetic FeCoNi Alloy Toward Low-Frequency Electromagnetic Wave Absorption

Highlights A novel FeCoNi carbon fiber (FeCoNi/CF) is obtained through an improved electrospinning technology, which greatly endows the fiber with strong magnetic property. The FeCoNi/CF exhibits an enhanced electromagnetic loss capability due to the construction of one-dimensional magnetic FeCoNi a...

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Vydáno v:Nano-micro letters Ročník 14; číslo 1; s. 170 - 13
Hlavní autoři: Yang, Bintong, Fang, Jiefeng, Xu, Chunyang, Cao, Hui, Zhang, Ruixuan, Zhao, Biao, Huang, Mengqiu, Wang, Xiangyu, Lv, Hualiang, Che, Renchao
Médium: Journal Article
Jazyk:angličtina
Vydáno: Singapore Springer Nature Singapore 01.12.2022
Springer Nature B.V
SpringerOpen
Témata:
Absorbers
Absorption spectra
Anisotropy
Carbon fibers
Electromagnetic fields
Electromagnetic losses
Electromagnetic radiation
Electromagnetism
Electronic holography
Engineering
Entropy
Improved electrospinning
LF electromagnetic fields
Lower-frequency electromagnetic wave absorption
Magnetic alloys
Magnetic properties
Medium-entropy magnetic alloy
Microwave absorption
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Off-axis electronic holography technique
One-dimension
Special issue on EM Wave Functional Materials
Thickness
Wave attenuation
Off-axis electronic holography technique
Lower-frequency electromagnetic wave absorption
Medium-entropy magnetic alloy
One-dimension
Improved electrospinning
ISSN:2311-6706, 2150-5551, 2150-5551
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Shrnutí:Highlights A novel FeCoNi carbon fiber (FeCoNi/CF) is obtained through an improved electrospinning technology, which greatly endows the fiber with strong magnetic property. The FeCoNi/CF exhibits an enhanced electromagnetic loss capability due to the construction of one-dimensional magnetic FeCoNi alloy. The designed one-dimensional FeCoNi/CF exhibits excellent performance, with a broad effective absorption band of 1.3 GHz in the low-frequency electromagnetic field at an ultrathin thickness of 2 mm, which provides a great potential for practical application in the future. Rational designing of one-dimensional (1D) magnetic alloy to facilitate electromagnetic (EM) wave attenuation capability in low-frequency (2–6 GHz) microwave absorption field is highly desired but remains a significant challenge. In this study, a composite EM wave absorber made of a FeCoNi medium-entropy alloy embedded in a 1D carbon matrix framework is rationally designed through an improved electrospinning method. The 1D-shaped FeCoNi alloy embedded composite demonstrates the high-density and continuous magnetic network using off-axis electronic holography technique, indicating the excellent magnetic loss ability under an external EM field. Then, the in-depth analysis shows that many factors, including 1D anisotropy and intrinsic physical features of the magnetic medium-entropy alloy, primarily contribute to the enhanced EM wave absorption performance. Therefore, the fabricated EM wave absorber shows an increasing effective absorption band of 1.3 GHz in the low-frequency electromagnetic field at an ultrathin thickness of 2 mm. Thus, this study opens up a new method for the design and preparation of high-performance 1D magnetic EM absorbers.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:2311-6706
2150-5551
2150-5551
DOI:10.1007/s40820-022-00920-7