Synthesis and characterization of a microwave absorbing material based on magnetoplumbite ferrite and graphite nanosheet

•Graphite nanosheet was precipitated by magnetoplumbite ferrite.•The composites were characterized by SEM, XRD, EDS and FTIR.•The composites are hard ferrites with high Ms, H and Mr.•BaFe12O19/NanoG has high microwave absorbing properties.

After pretreated, graphite nanosheet was precipitated by magnetoplumbite ferrite to produce a microwave absorbing material BaFe12O19/NanoG. The structure of the material was characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction and transmission electron microscopy. The crystal parameters of BaFe12O19 in BaFe12O19/NanoG are as follows: a=0.5895 nm, c=2.3047 nm, c/a=3.9096 nm, and D=87.3 nm. The reflection loss of BaFe12O19/NanoG is between −16 dB and −17 dB; the minimum loss is −17.06 dB at 9.27 GHz.