Present article presents the dielectric and magnetic studies of divalent metal ions substituted nickel ferrite. Divalent metal ions such as Cu+2, Cd+2 and Zn+2 were substituted in pure Nickel ferrite (NiFe2O4) with the basic composition Ni0.8M0.2Fe2O4 (here, M= Cu+2, Cd+2 and Zn+2), which were synthesized by auto-combustion method using nitrate-citrate precursor technique. As-burnt samples were sintered at 9500C and investigated for various properties. Phase of the substituted samples were probed by X-ray diffraction (XRD) studies. Peaks observed in the obtained XRD spectrum confirms the single phase spinel cubic structure for the divalent metal ions substituted NiFe2O4. Using optical surface studies, surface morphology of the samples has been investigated. Frequency dependent dielectric properties were studied using HIOKI make LCR meter model 3520-50 from 100Hz to 5 MHz. For the proposed nano-powder samples magnetic measurements were done at RT using Vibrating Sample Magnetometer (VSM).

Optical; Dielectric; Sintered; Magnetic; Combustion.