Achieving excellent metallic magnet-based absorbents by regulating the eddy current effect
| Autor: | Chunhong Gong, Yupeng Shi, Yahong Zhang, Miaomiao Zhang, Lei Zhang, Haoxu Si, Xuefeng Zhang, Zhiyang Jiang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Composite number General Physics and Astronomy 02 engineering and technology Dissipation 021001 nanoscience & nanotechnology 01 natural sciences Electromagnetic radiation Magnet 0103 physical sciences Dissipative system Composite material 0210 nano-technology Absorption (electromagnetic radiation) Mass fraction Microwave |
| Zdroj: | Journal of Applied Physics. 126:105109 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.5109538 |
| Popis: | We present the results that a suitable eddy current effect could act as an effective microwave dissipative mechanism for metallic magnet-based electromagnetic wave absorbents. With no need to introduce low or nonconductive components, the strongest absorption of −43.2 dB at 14.7 GHz could be achieved with a thin absorbent layer of 1.1 mm and at the mass fraction of the nickel fibers filler in the composite of 40 wt. %. This work utilizes the intrinsic dependence of electromagnetic wave dissipation on the eddy current effect and opens a simple and feasible way for designing of microwave absorption materials and composites. |
| Databáze: | OpenAIRE |
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