TY  - JOUR
AU  - Han, Yixuan
AU  - He, Mukun
AU  - Hu, Jinwen
AU  - Liu, Panbo
AU  - Liu, Zhongwu
AU  - Ma, Zhonglei
AU  - Ju, Wenbo
AU  - Gu, Junwei
PY  - 2023
TI  - Hierarchical design of FeCo-based microchains for enhanced microwave absorption in C band
JO  - Nano Research
SN  - 1998-0124
SP  - 1773
EP  - 1778
VL  - 16
IS  - 1
AB  - Microwave absorbing materials (MAMs) has been intensively investigated in order to meet the requirement of electromagnetic radiation control, especially in S and C band. In this work, FeCo-based magnetic MAMs are hydrothermally synthesized via a magnetic-field-induced process. The composition and morphology of the MAMs are capable of being adjusted simultaneously by the atomic ratio of Fe2+ to Co2+ in the precursor. The hierarchical magnetic microchain, which has a core–shell structure of two-dimensional FexCo1−xOOH nanosheets anchored vertically on the surface of a one-dimensional (1D) Co microchain, shows significantly enhanced microwave absorption in C band, resulting in a reflection loss (RL) of lower than −20 dB at frequencies ranging from 4.4 to 8.0 GHz under a suitable matching thickness. The magnetic coupling of Co microcrystals and the double-loss mechanisms out of the core-shell structure are considered to promote the microwave attenuation capability. The hierarchical design of 1D magnetic MAMs provides a feasible strategy to solve the electromagnetic pollution in C band.
UR  - https://doi.org/10.1007/s12274-022-5111-y
DO  - 10.1007/s12274-022-5111-y