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- Title
Fabricated Magnetic-Dielectric Synergy Fe@Carbon Microspheres by Spray-Pyrolysis with Excellent Microwave Absorption in C-Band.
- Authors
Hao Zhu; Zhuolin Li; Mengqiu Huang; Lei Wang; Yuxiang Lai; Yongsheng Liu; Renchao Che
- Abstract
The development of materials with excellent absorption properties in the C-band through the utilization of the magnetoelectric coupling effect holds great potential within the field of absorption research. However, there are still several challenges. To address these challenges, Fe@Carbon (Fe@C) microspheres were successfully fabricated using spray-drying followed by pyrolysis. The average size of the Fe@C microspheres is 3.6 µm with uniform dispersion, where iron nanoparticles (NPs) are tightly anchored with the carbon matrix to tune the microwave absorption properties. Synthesized Fe@C microspheres exhibit remarkable electromagnetic wave absorption capability within the C-band (4–8 GHz), covering a bandwidth of 2.8 GHz. Also, the Fe@C microsphere exhibits a minimum reflection loss of −48.11 dB at 4.5 mm thickness and 6.88 GHz. Systematic analysis has uncovered that the integration of large-sized magnetic carbon structures, high-density confinement of magnetic units, and robust magnetic coupling are crucial for enhancing the magnetic loss dissipation. This study introduces a novel approach for the preparation of electromagnetic absorbing materials, providing inspiration for further exploration of the mechanism behind low-frequency magnetic loss.
- Subjects
ELECTROMAGNETIC wave absorption; MAGNETIC coupling; MAGNETOELECTRIC effect; MICROSPHERES; MAGNETIC flux leakage; MAGNETIC confinement
- Publication
Progress in Electromagnetics Research, 2024, Vol 179, p61
- ISSN
1070-4698
- Publication type
Article
- DOI
10.2528/PIER23102006