Abstract
In this paper, we designed and prepared a composite of BaFe12O19 (BFO) flakes, two-dimensional graphene and Fe3O4 nanoparticles using a two-step solvothermal method. The combination of BFO flakes and two-dimensional graphene could effectively enhance the heterointerface and is believed to be favorable to enhance the interface polarization. The introduction of inverse spinel Fe3O4 as the third phase could increase the saturated magnetization. The phase structure, morphology, magnetic properties and electromagnetic wave absorption performance of the as-prepared samples were characterized. Due to the enhanced interfacial polarization between the BaFe12O19 flakes and graphene, the composite of RGO/BaFe12O19/Fe3O4 exhibits excellent microwave absorption properties. The maximum reflection loss can reach -46.04 dB at 15.6 GHz with a thickness of 1.8 mm, and the effective absorption bandwidth reaches 5.68 GHz (from 11.60 GHz to 17.28 GHz). It is believed that the RGO/BaFe12O19/Fe3O4 composites can find potential application in the field of microwave absorption due to their excellent absorption properties.
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