Facile chemical synthesis of amorphous FeB alloy nanoparticles and their superior electromagnetic wave absorption performance
| Autor: | Lieji Yang, Yu Zhang, Meng Li, Zhihong Yang, Renbing Wu, Juncen Liu, Xujian Lyu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Materials science Scanning electron microscope business.industry Reflection loss Impedance matching 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Amorphous solid Transmission electron microscopy Optoelectronics General Materials Science Dielectric loss 0210 nano-technology business Microwave |
| Zdroj: | Journal of Physics and Chemistry of Solids. 126:143-149 |
| ISSN: | 0022-3697 |
| DOI: | 10.1016/j.jpcs.2018.11.015 |
| Popis: | Currently, the magnetic metal based electromagnetic wave absorber have attracted extensively interest. However, how to control the high conductivity of magnetic metals and achieve good impedance matching of electromagnetic absorbing materials made by them have become a big problem at present. Herein, amorphous FeB nanoparticles were rationally synthesized by a wet method, which involves a simple three-step solution reaction. The obtained products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and vibrating sample magnetometer (VSM). Benefiting from their amorphous structure, the resulting FeB nanoparticles show good magnetic properties, dielectric losses and proper impedance matching, thus good microwave attenuation ability can be achieved in the low frequency range. The maximum reflection loss is −15 dB at 3.5 GHz with a thickness of 8 mm which can be mainly attributed to its excellent impedance matching in the frequency range of 2.5–4.5 GHz. These amorphous FeB alloy nanoparticles are expected to be promising candidates for efficient microwave absorbers in the S band. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect