TY - JOUR
T1 - Synthesis of Air@Co@Co7Fe3@Fe3O4 composite with enhanced electromagnetic wave absorption performance
AU - Li, Hong
AU - Li, Hongyang
AU - Zhou, Fengxian
AU - Sheng, Bo
AU - Shi, Sujun
AU - Zhao, Yongjie
AU - Chen, Weiwei
AU - Zhao, Xiuchen
AU - Liu, Ying
N1 - Publisher Copyright:
© 2024 The Authors
PY - 2024/5/1
Y1 - 2024/5/1
N2 - Electromagnetic pollution prevention and military stealth technology requirements for wave absorbing materials gradually increased, therefore, the research and development of absorbing materials with the merits of low reflection loss, wide effective absorption bandwidth, and lightweight is of great significance. In this work, Air@Co@Co7Fe3@Fe3O4 hollow spherical particles have been successfully synthesized via a simple chemical plating method combined with a post heat treatment. It reveals that the Air@Co@Co7Fe3@Fe3O4 particles with a loading of 50 wt % exhibits an optimum reflection loss (RL) value of −20.77 dB at 15.52 GHz and broad effective absorption bandwidth (EAB, RL ≤ −10 dB) of 4.56 GHz with a thickness of 1.4 mm. Compared to Air@Co hollow spherical particles, Air@Co@Co7Fe3@Fe3O4 particles with natural resonance and eddy current loss, as well as the interlayer interfacial polarization mechanism of the multilayer structure, exhibit superior electromagnetic wave(EMW) absorption capabilities. The Air@Co@Co7Fe3@Fe3O4 hollow spherical particles could be a new highly efficient absorbing material for electromagnetic waves.
AB - Electromagnetic pollution prevention and military stealth technology requirements for wave absorbing materials gradually increased, therefore, the research and development of absorbing materials with the merits of low reflection loss, wide effective absorption bandwidth, and lightweight is of great significance. In this work, Air@Co@Co7Fe3@Fe3O4 hollow spherical particles have been successfully synthesized via a simple chemical plating method combined with a post heat treatment. It reveals that the Air@Co@Co7Fe3@Fe3O4 particles with a loading of 50 wt % exhibits an optimum reflection loss (RL) value of −20.77 dB at 15.52 GHz and broad effective absorption bandwidth (EAB, RL ≤ −10 dB) of 4.56 GHz with a thickness of 1.4 mm. Compared to Air@Co hollow spherical particles, Air@Co@Co7Fe3@Fe3O4 particles with natural resonance and eddy current loss, as well as the interlayer interfacial polarization mechanism of the multilayer structure, exhibit superior electromagnetic wave(EMW) absorption capabilities. The Air@Co@Co7Fe3@Fe3O4 hollow spherical particles could be a new highly efficient absorbing material for electromagnetic waves.
KW - Electromagnetic wave absorption
KW - Hollow Co particles
KW - Hollow Co@CoFe@FeO spherical particles
KW - Magnetic loss
UR - http://www.scopus.com/inward/record.url?scp=85189527125&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2024.03.229
DO - 10.1016/j.jmrt.2024.03.229
M3 - Article
AN - SCOPUS:85189527125
SN - 2238-7854
VL - 30
SP - 2282
EP - 2290
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
ER -