• Dr. Aravind Seema
• D. Mallesh

Nickel ferrite of chemical compositions Ni1-xMgxFe2O4 (where x=0.0, 0.25, 0.5, 0.75 and 1.0 with 0.25 variation) nano-crystalline materials were prepared using citrate-gel auto combustion route. The prepared sample’s crystalline size and phase was confirmed by XRD, and the crystalline size was determined to be 26 to 28 nm using the Debye-Scherrer equation. The variations in lattice parameter of the samples indicates that it obeys Vegard's law. X-ray density of the sample found to be 6.58 to 5.10 gcm-3. The SEM pictures show aggregated objects and particles that are in the nanometer range. According to stoichiometric ratio, elements are present (nickel, magnesium, iron, and oxygen) which confirmed by elemental dispersive spectroscopy (EDS). There are two FT-IR bands found in the FT-IR spectrum, that correspond to the stretching frequencies of the octahedral (ʋ2) and tetrahedral (ʋ1) bands. The optical absorption spectra revealed the decrease of cut-off wavelength and increasing trend of band gap energies. AC conductivity measurements revealed the increment of conductivity with an applied frequency and the Cole-Cole plots were resulted in the decrease of bulk resistance.

Citrate gel auto combustion, Ni-Mg nano ferrites, XRD, SEM, FT-IR., Optical band gap, AC conductivity

" Synthesis, Structural, Optical, Physical and AC Conductivity Studies of Mg doped Nickel Nano Ferrites for multiple Applications", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 3, page no.b727-b737, March-2024, Available :http://www.jetir.org/papers/JETIR2403185.pdf

" Synthesis, Structural, Optical, Physical and AC Conductivity Studies of Mg doped Nickel Nano Ferrites for multiple Applications", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 3, page no. ppb727-b737, March-2024, Available at : http://www.jetir.org/papers/JETIR2403185.pdf