In the presented work, double substitution (Cr3+Gd3+) for CoCr0.04GdxFe1.96-xO4 (0 ≤ x ≤ 0.12) synthesized by co-precipitation method. X-ray diffraction (XRD) and fourier transform infrared spectroscopy (FTIR) are employed to confirm the phase identification. The lattice constants calculated lies in the range 8.3169-8.3717Å, while Scherrer formula was used to calculate the average crystallite size 21-106 nm. Morphology of the samples was studied by SEM. M-H-loop showing the effect of Gd3+concentration on intrinsic as well as extrinsic magnetic parameter. It is observed that saturation magnetization of the resulting samples were decreased from 63.5 -53.8 emu/g with the increase in content, while coercivity observed less than 1 KOae