The hetero-structured nanoarray of CoFe2O4 nanosheets anchored on flaky FeSiAl with excellent microwave absorption
Source abstract
Abstract
Hetero-structured nanoarray of CoFe2O4nanosheets anchored on flaky FeSiAl was successfully fabricated by urea assisted hydrothermal synthesis. The SEM, XRD, XPS and magnetic hysteresis loops confirmed that the nanoarray oxide was a CoFe2O4spinel phase. The thickness of the CoFe2O4nanosheet increases with the extension of reaction time. The CoFe2O4nanosheets optimized the dielectric and impedance matching of the FeSiAl composites. Interface polarization and multiple reflections of the hetero-structured nanoarray improved dielectric loss. Compared to the high aspect ratio of pure FeSiAl with poor microwave absorption, the hetero-structured nanoarray modified flaky FeSiAl can achieve better RL of − 42.7 dB and EAB of 2.96 GHz at a relatively thin thickness of 2.1 mm. The results also indicate that the objectives of thin thickness, outstanding RL and wide EAB can be achieved via the adjustment of dielectric loss originating from the construction of hetero-structured nanoarray.Graphical abstract
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Magnetic Properties and Synthesis of Ferrites · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
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