| A zinc substituted copper nano ferrites with the compositional formula Cu0.3Ni0.3Zn0.3Fe2O4 & without zinc substituted Cu0.5Ni0.5Fe2O4 were prepared by the Citrate gel auto combustion technique and sintered at 7000C for 4 hr. The X-ray difractrograms (XRD) clearly exhibited the existence of single phase cubic spinal structure. |