sol-gel approach for the synthesis and characterization of mg and cu substituted mn-zn ferrite nanoparticles

The mn-zn ferrite with a composition of mn0.25mg0.08cu0.25zn0.42fe2o4 has been synthesized in this study using the chemical sol-gel technique at a ph of 7. the sample was prepared and subsequently annealed at a temperature of 700°c. the nanocrystalline ferrite samples were subjected to characterization using x-ray diffraction (xrd), fourier transform-infrared spectroscopy (ft-ir), scanning electron microscopy (sem), thermogravimetry (tg), and differential thermal analysis (dta). the findings of these observations are delineated and deliberated. the sample’s phase composition was verified using x-ray diffraction examination. the crystalline size was determined using scherrer’s formula and was observed to be within the range of 20-75 nm. two notable stretching bands were seen in the ftir spectra within the range of 400-650 cm-1. the spinel structure of the produced nanoparticles was confirmed by these two bands. the magnetic characteristics of the powder were examined using a vibrating sample magnetometer (vsm). the presence of m-h hysteresis loops suggests that the produced nanoparticles have superparamagnetic properties, as evidenced by their low coercive force, remanent magnetization, and saturation magnetization values.