Microwave absorption properties of C/(C@CoFe) hierarchical core–shell spheres synthesized by using colloidal carbon spheres as templates
Source abstract
Abstract
Abstract C/(C@CoFe) hierarchical core–shell spheres were prepared via a facile method by using colloidal carbon spheres as templates. XRD, SEM, TEM, TG-DSC and vector network analyzer were used to characterize phase composition, microstructure and microwave absorption properties of the composite spheres. These composite core–shell spheres have hierarchical structure: in the nanoscale, graphite encapsulate CoFe nano-particles and form C@CoFe capsules, while in the scale of microns, C@CoFe capsules are coated on the surfaces of micro-grade carbon spheres. The microwave absorbing properties of the C/(C@CoFe) composite spheres were improved significantly in comparison to carbon only. The minimum reflection loss (RL) value of −16 dB was achieved at 8.5 GHz and the bandwidth of RL
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications
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References (17)
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