Constructing La-doped CoFe2O4/CNTs hybrids with urchin structure for enhanced microwave absorption performance
Source abstract
Abstract
Hybrids of La-doped CoFe2O4coated by carbon nanotube ((LaCoFeO)-xCNTs) were successfully synthesized by chemical vapor deposition. By using different deposition durations, the growth densities, lengths, and weight fractions of CNTs could be adjusted in the hybrids. To study the electromagnetic wave absorption performances of (LaCoFeO)-xCNTs/paraffin composites, two series of composites of 5 wt% and 10 wt% reinforcements were prepared for electromagnetic measurements. The best performances were achieved by the (LaCoFeO)-15CNTs/paraffin-5 wt%, where the minimum value of reflection loss was − 35.33 dB, and an effective absorption bandwidth of 3.28 GHz (i.e., 9.68–12.96 GHz). Meanwhile, (LaCoFeO)-5CNTs 10 wt% exhibited a wide effective absorption bandwidth of 5.44 GHz (12.56 to 18 GHz), nearly covering the Ku band. The high absorption performances would be attributed to the synergistic effects of the improved match of impedances, as well as the increased dielectric and magnetic losses by the microstructure of hybrids.Graphical abstract
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Magnetic Properties and Synthesis of Ferrites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
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