Germanium oxide, Magnetron sputtering, XRD, Optical properties, Density Functional Theory (DFT) calculations
RF and DC magnetron co-sputtering, α-Fe2O3, Raman, XRD, SEM
RF and DC magnetron co-sputtering, α-Fe2O3, X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM).