Synthesis and Fe-57 Mossbauer Studies of Polycrystalline Magnesium Ferrites MgFe2O4 and Mg(Fe0.8Ga0.2)(2)O-4

The main goal of this study is the preparation of single-phase MgFe2O4 and Mg(Fe0.8Ga0.2)(2)O-4 powders using a gel auto-combustion method. X-ray powder diffraction (PXRD), micro-X-ray fluorescence spectrometry (mu-XRF), CHNS elemental analysis, scanning and transmission electron microscopies (SEM and TEM) methods have been used to characterize morphology and chemical composition of the synthesized sample. The cationic distribution in the ferrites has been evaluated from the Fe-57 Mossbauer spectroscopy measurements. Mossbauer measurements were used to characterize the paramagnet-ferrimagnet phase transition in MgFe2O4.