Mossbauer Studies on Pickling Iron Oxide and Mn-Zn Ferrite

The microstructure and particle size of the acid regeneration iron oxide samples were observed with SEM and laser particle size analyzer. The hyperfine field variations of acid regeneration iron oxide and Mn-Zn ferrite samples were investigated with Mossbauer spectra at room temperature. The results show that the referenced imported iron oxide has smaller particle with uniform distribution. The quadrupole splitting value of pickling iron oxide is small, and the electric field symmetry around pickling iron oxide is good. The Mossbauer spectra and its parameters of Mn-Zn ferrite show that the coordination environment around magnetic phase of Fe in MnZn ferrite is different from iron oxide. For the Mn-Zn ferrite, it's appeared that a highproportion doublet is observed with an increasing concentration of Zn. And when the concentration of Mn is in lowratio, a spinel structure of Mn-Zn ferrite is inclined to form.