The effect of synthesis temperature on structural and magnetic properties of Fe 3 O 4 films grown on the SiO 2 /Si(001) surface

Magnetite (Fe 3 O 4 ) films have been deposited on a SiO 2 /Si(001) surface at various temperatures by reactive sputtering of iron in oxygen. The influence of the synthesis temperature on the structure and magnetic properties of Fe 3 O 4 /SiO 2 /Si(001) samples have been studied by the methods of reflection high-energy electron diffraction, atomic force microscopy, Raman spectroscopy, and vibrating sample magnetometry. An optimum substrate temperature for the formation of polycrystalline films with the best magnetic characteristics has been determined.