A novel and simple process for nanosized Mg-Mn ferrite preparation from solution combustion method and study of its characteristics

Abstract

A novel solution combustion method has been used to prepare Mg-Mn ferrites of various compositions, Mg0.9Mn0.1Fe1-xO 4 where x = 0.2, 0.4, 0.6, 0.8, and the properties were investigated in the present work. Nano-size Mg-Mn ferrite particles with diameter in the range of 8~ 15 nm were successfully formed via this method. The combustion temperature of the oxidation-reduction was apparently occurred at 200°C. The result of X-ray diffraction (XRD) analysis indicated that the as-burnt powder affords a pure single spinel ferrite phase at low temperature. The thermal analysis of nitrate-citrate gels was characterized by DTA-TG. The TEM and SEM observations give the morphology and microstructure of the products. The dielectric properties of the sintered Mg-Mn ferrites were investigated by using HP/Agilent 4291B RF impedence/material analyzer. It was found that there was no maximum dielectric loss within the measured frequency range until 1 GHz due to excellent compositional control in this method. © 2013 The American Ceramic Society.