▎ 摘　　要

In this work, an ultralight nanocomposite of graphene oxide aerogels as a matrix and nickel-zinc ferrite (Ni0.7Zn0.3Fe2O4) nanoparticles as a second phase for the absorption of electromagnetic waves in the frequency of 1-18 GHz were fabricated by the hydrothermal - freeze-drying method. alpha-Al2O3 nanoparticles were used for further impedance matching for applications in electromagnetic wave absorption. XRD, SEM, EDS, and VNA analyses were used to characterize the sample. The effects of the amount of Ni0.7Zn0.3Fe2O4 (NZF) nanoparticles (GO: NZF volume percent ratio = 5:1 and 2:1) on the absorption of electromagnetic waves were investigated.