▎ 摘　　要

Ferrites (FenOm) nanoparticles decorated graphene nanocomposites are prepared by gamma ray irradiation technology. X-ray diffraction patterns, X-ray photoelectron spectroscopy, and transmission electron microscopy are applied to analyze the structure of the obtained products. Graphene oxide (GO) is partially reduced to graphene by gamma ray irradiation. Besides, FenOm nanoparticles (the size is similar to 4.9 nm), which are composed of Fe2O3 and Fe3O4, are evenly decorated on graphene nanosheets. Due to the introduction of magnetic ferrite nanoparticles, the obtained nanocomposite shows an optimal reflection loss (RL) of - 42.7 dB at 17.0 GHz. Besides, the effective absorption bandwidth (RL