<p>This study involves the synthesis of graphene (Gr) doped Co_0.25, Cd_0.5, Ni_0.25, Fe₂O₄/x-Gr (x = 0, 2.5, 3.75, 5 wt%) through the sol-gel auto-combustion method. Various characterization techniques were employed to analyze the properties of the prepared samples, including scanning electron microscopy (SEM) for surface morphology assessment, X-ray diffraction (XRD) for structural phase determination, ultraviolet spectroscopy for energy band gap, and dielectric properties. SEM images of ferrite (F) revealed that the sample contains clusters of Gr nanoparticles. XRD analysis clearly indicates the existence of the single-phase spinel matrix across all the samples. Moreover, the crystallite size (D) increased from 28 nm to 88 nm by increasing the concentration of Gr. The band gap (E_g) increases after incorporation of Gr. AC conductivity increases after Gr doping that may be attributed to cation hopping and the grain boundary of the nanostructure. The dielectric loss and dielectric constant of Gr doped shows frequency-dependent behavior which was analyzed using both Koop’s theory and the Maxwell-Wagner model. Moreover, it was found that the increased dielectric constant and dielectric loss after the incorporation of Gr is due to defects arising in the crystal structure. The incorporation of Gr resulted in changes to DC resistivity, with a notable decrease observed at varying temperatures.</p> Graphical Abstract <p></p>