series of Mn_xZn_1–xFe₂O₄ (x = 0.5, 0.6, 0.7) nanoferrites have been produced by sol-gel auto combustion method in order to study their structural and magnetic properties. XRD patterns revealed the formation of ferrite phase along with the co-existence of secondary phases. Themodynamical stability of Mn²⁺ in the spinel structure improved the formation of ferrite phase with the substitution of Mn²⁺. The saturation magnetization is increased with the increase in Mn²⁺ ion concentration. Cation redistribution between tetrahedral and octahedral sites seems to be more predominant in the present ferrite systems which are affecting the magnetic properties of the ferrite systems. In the present manuscript the results of structural and magnetic studies are reported.