Abstract
Electromagnetic wave absorption materials with the features of being low density and porosity have attracted a great deal of attentions. In this manuscript, porous Co/CoO microrods were successfully synthesized through a facial and simple method. The resultant porous Co/CoO microrods exhibited superior microwave absorption properties because of their special structure. The high saturation magnetization of ferromagnetic metal Co component made the as-prepared composites have large relative complex permeability. The porous structures of materials improved the impedance match and enhanced the multiple reflections within the materials. With the 70 wt% of functional filler loading, the relative complex permittivity and permeability had significant increase due to the percolation effect. When the thickness of absorber is only 1.20 mm, the effective bandwidth is from 10.83 to 17.84 GHz covered almost Ku band (12–18 GHz). The minimum value of RL (−47.96 dB) was obtained at the frequency of 8.08 GHz with the thickness of only 1.76 mm. The result shows that this material can be used as a candidate for microwave absorption materials at low frequency range with a small thickness.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
