TY - JOUR
T1 - Enhanced microwave absorption properties of rod-shaped Fe2O3/Fe3O4/MWCNTs composites
AU - Huang, Lina
AU - Liu, Xiaofang
AU - Yu, Ronghai
N1 - Publisher Copyright:
© 2018
PY - 2018/6
Y1 - 2018/6
N2 - A novel type of composite absorber, i.e. Fe2O3/Fe3O4/MWCNTs composites (0%, 1.7% and 5% MWCNTs), with microwave absorption properties was successfully fabricated by a facile hydrothermal method. The prepared α-Fe2O3/Fe3O4 nanoparticles displayed rod-shaped morphology. The complex permittivity and permeability of the Fe2O3/Fe3O4/MWCNTs composites distinctly increased, furthermore, with the introduction of MWCNTs, the Fe2O3/Fe3O4/MWCNTs composites exhibited fine microwave absorption performance with strong absorption and wide absorption band. In particular, for Fe2O3/Fe3O4/1.7% MWCNTs composite with an absorber thickness of 2.5 mm, the reflection loss (RL) reached a minimum of −44.1 dB at 10.4 GHz and the effective absorption bandwidth (RL<−10 dB) covered 3.3 GHz. The enhanced microwave absorption performance of the Fe2O3/Fe3O4/MWCNTs composites was attributed to the high dielectric loss and improved impedance matching which was closely related to the rod-shaped morphology of Fe2O3, Fe3O4 and the introduction of MWCNTs.
AB - A novel type of composite absorber, i.e. Fe2O3/Fe3O4/MWCNTs composites (0%, 1.7% and 5% MWCNTs), with microwave absorption properties was successfully fabricated by a facile hydrothermal method. The prepared α-Fe2O3/Fe3O4 nanoparticles displayed rod-shaped morphology. The complex permittivity and permeability of the Fe2O3/Fe3O4/MWCNTs composites distinctly increased, furthermore, with the introduction of MWCNTs, the Fe2O3/Fe3O4/MWCNTs composites exhibited fine microwave absorption performance with strong absorption and wide absorption band. In particular, for Fe2O3/Fe3O4/1.7% MWCNTs composite with an absorber thickness of 2.5 mm, the reflection loss (RL) reached a minimum of −44.1 dB at 10.4 GHz and the effective absorption bandwidth (RL<−10 dB) covered 3.3 GHz. The enhanced microwave absorption performance of the Fe2O3/Fe3O4/MWCNTs composites was attributed to the high dielectric loss and improved impedance matching which was closely related to the rod-shaped morphology of Fe2O3, Fe3O4 and the introduction of MWCNTs.
KW - Electromagnetic properties
KW - FeO/FeO/MWCNTs composites
KW - MWCNTs
KW - Microwave absorption
UR - https://www.scopus.com/pages/publications/85047646009
U2 - 10.1016/j.pnsc.2017.04.002
DO - 10.1016/j.pnsc.2017.04.002
M3 - 文章
AN - SCOPUS:85047646009
SN - 1002-0071
VL - 28
SP - 288
EP - 295
JO - Progress in Natural Science: Materials International
JF - Progress in Natural Science: Materials International
IS - 3
ER -