The impact of Cr³⁺ ion on the magnetic properties of Mn_0.50Zn_0.50Cr_xFe_2-xO₄ (with x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5) has been studied. Ferrite samples were synthesized by combustion method and sintered at various temperatures (1250°C, 1300°C and 1350°C). The structural properties were investigated by means of X-ray diffraction patterns and indicated that the samples possess single phase cubic spinel structure. The lattice parameter decreases with the increase in Cr³⁺ content, as the ionic radius of Cr³⁺ ion is smaller than that of Fe³⁺. The average grain size (D), bulk density (ρ_B) and initial permeability （μ_i^’ ）decreases with increase in Cr³⁺ content whereas porosity follows its opposite trend. The ρ_B was found to increase with increase in Cr³⁺ content as the sintering temperature (T_s) is increased from 1250°C to 1350°C. The T_s affects the densification, grain growth and （μ_i^’ ） of the samples. The （μ_i^’ ） strongly depends on average grain size, density and intragranular porosity. The B-H loops of the compositions were measured at room temperature. The saturation magnetization (M_s), coercivity (H_c) and hysteresis losses were studied as a function of Cr³⁺ content. The M_s was found to decrease with the increase of Cr³⁺ content, which is attributed to the dilution of A-B interaction.