▎ 摘　　要

Porous corn-like Fe3O4 nanosheets decorated fluffy graphene nano-composites (Fe3O4 @GNS) were synthesized. The electromagnetic parameters were obtained from the composites that were combined with 80 wt% paraffin. The results showed that the nanocomposites exhibited a maximum RL of - 50.6 dB at 9.12 GHz when the corresponding thickness was 3.4 mm, and the effective frequency bandwidth (RL