A new nano CoFe2 alloy precursor for cobalt ferrite production via sonoreduction process

We have isolated a stable nano bcc-CoFe2 alloy using a combi-sonoreduction process under basic conditions, serving as a potential precursor for CoFe2O4 production. X-ray and transmission electron microscopy (TEM) confirms the formation of a bcc phase CoFe2 alloy with particle size < 10 nm, having spherical morphology. The thermo gravimetric analysis (TGA) confirms the alloy composition, showing a weight gain between 200 and 500 deg C, leading to a fully oxidized CoFe2O4. A significant increase in the saturation magnetization (M, = 230 emu/g) for the nano CoFe2 alloy is observed compared to the theoretical bulk value (200 emu/g) at 300 K.