Using nickel, zinc and ferric nitrates, and glycine in a fuel-rich composition, Ni1–xZnxFe2O4 nanoparticles
were prepared by a simple low-temperature auto-combustion method without further sintering at
high temperatures. The auto-combusted powders obtained were characterized by X-ray diffraction (XRD),
Raman spectroscopy, scanning electron microscopy, energy-dispersive X-ray (EDAX) analysis and vibrating
scanning magnetometer measurements. XRD confirms the formation of pure nanocrystalline spinel phases
with an average diameter of about 55 nm. Raman spectra show tetrahedral and octahedral sites in the structure
of Ni1–xZnxFe2O4 and also imply the doping of Zn2+ and displacement of Fe3+ ions from the tetrahedral
site. EDAX showed that the samples were close to the nominal compositions. The magnetic measurement
shows that the saturation magnetization and remanence magnetization decreases with the increase in the zinc
content
