In-depth structural characterization and magnetic properties of quaternary ferrite systems Co0.5Zn0.25M0.25Fe2O4 (M = Ni, Cu, Mn, Mg)

摘要: Abstract This paper investigates the structural and magnetic properties of a mixed series ferrites having general formula Co0.5Zn0.25M0.25Fe2O4 (M = Ni, Cu, Mn, Mg). Insights on surface chemistry, morphological parameters are presented in order to achieve highly tuned ferrite systems with specific characteristics. The site occupancy cations spinel structure was determined using XAS, XRD Raman spectroscopy. A 100% tetrahedral sites observed for Zn all samples. Co occupied octahedral proportion Co–Zn–Cu, Co–Zn–Mg around 80% Co–Zn–Ni, Co–Zn–Mn. Ni were found only sites, while Cu Mn 60% sites. cation distribution results correlated data. At same time, not distribution, but also particles size have great influence optical ferrites. Given importance chemistry nanoparticles, XPS FT-IR analysis used prove functionalization groups belonging surfactant. Moreover, peculiar behavior manganese structures clarified origin multiple states (Mn2+and Mn4+) elucidated. Finally, parallels been drawn between use different gain properties.