Thermal decomposition studies of monodispersed core and core-shell γ-Fe₂O₃@Mn₂O₃ nanoparticles

Monodispersed γ-Fe₂O₃ and γ-Fe₂O₃@Mn₂O₃ nanoparticles were prepared by thermolysis method. Particles were coated with oleic acid molecules to make monodispersed. The amount of oleic acid is calculated from TGA curve. Thermal decomposition of oleic acid molecules and phase transition of γ-Fe₂O₃ to another phase at higher temperature is discussed here. With Mn₂O₃ incorporation as shell, the temperature corresponding to the phase transition decreases. (author)