Self‐propagating combustion triggered synthesis of 3D lamellar graphene/BaFe₁₂O₁₉ composite and its electromagnetic wave absorption properties

The synthesis of 3D lamellar graphene/BaFe₁₂O₁₉ composites was performed by oxidizing graphite and sequentially self‐propagating combustion triggered process. The 3D lamellar graphene structures were formed due to the synergistic effect of the tremendous heat induced gasification as well as huge volume expansion. The 3D lamellar graphene/BaFe₁₂O₁₉ composites bearing 30 wt % graphene present the reflection loss peak at −27.23 dB as well as the frequency bandwidth at 2.28 GHz (< −10 dB). The 3D lamellar graphene structures could consume the incident waves through multiple reflection and scattering within the layered structures, prolonging the propagation path of electromagnetic waves in the absorbers.