相关链接
联系方式
  • 通信地址:陕西省西安市友谊西路127号
  • 邮编:710072
  • 电话:029-88431638
  • 传真:
  • Email:nwpugjw@163.com
当前位置:> 首页 > 论文著作 > 正文
[Nano Research] Hierarchical Design of FeCo-Based Microchains for Enhanced Microwave Absorption in C band
作者:Yixuan Han, Mukun He, Jinwen Hu, Panbo Liu, Zhongwu Liu, Zhonglei Ma, Wenbo Ju* and Junwei Gu*
关键字:Electromagnetic interference shielding
论文来源:期刊
具体来源:Nano Research
发表时间:2022年

Yixuan Han, Mukun He, Jinwen Hu, Panbo Liu, Zhongwu Liu, Zhonglei Ma, Wenbo Ju* and Junwei Gu*. Hierarchical Design of FeCo-Based Microchains for Enhanced Microwave Absorption in C band. Nano Research, 2023, 16(1): 1773-1778. 2021IF=10.269(1区材料科学Top期刊,中国科技期刊卓越行动计划-领军类期刊项目)

https://doi.org/10.1007/s12274-022-5111-y

Abstract

FeCo-based magnetic microwave absorbing materials (MAMs) are hydrothermally synthesized via amagnetic-field-induced process. 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. 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.

本文采用磁力诱导-水热还原法,通过调整投料比、预热温度、反应温度、反应时间及NaOH用量等条件合成了FeCo合金纳米颗粒(0D-P)、FeCo合金微米链(1D-MC)及核壳结构FexCo1-xOOH@Co微米链(2D@1D-MC)三种FeCo合金磁性吸波剂及FeCo基微波吸收材料(MAMs)。特殊的核壳结构(二维FexCo1-xOOH纳米片垂直锚定在一维Co微链表面)显著增强了2D@1D-MC材料在C波段的吸波性能,在C波段(4.4 GHz~8.0 GHz)实现小于-20 dB的反射损耗。一维磁性MAMs的分层结构设计为解决C波段的电磁污染提供了可行方案。