Sol–gel auto-combustion synthesis, structural and enhanced magnetic properties of Ni2+ substituted nanocrystalline Mg–Zn spinel ferrite

摘要: Abstract Nanocrystalline arrays of Ni2+ substituted Mg–Zn spinel ferrite having a generic formula Mg0.7−xNixZn0.3Fe2O4 (x=0.0, 0.2, 0.4 and 0.6) were successfully synthesized by sol–gel auto-combustion technique. The fuel used in the synthesis process was citric acid metal nitrate-to-citric ratio taken as 1:3. phase, crystal structure morphology Mg–Ni–Zn ferrites investigated X-ray diffraction, scanning electron microscopy, Fourier transformer infrared spectroscopy techniques. lattice constant, crystallite size, porosity cation distribution determined from diffraction data method. FTIR is to deduce structural investigation redistribution cations between octahedral tetrahedral sites structured material. Morphological suggests formation grain growth content x increases. saturation magnetization magneton number hysteresis loop increases with increasing concentration ‘x’ ferrite.