Influence of the Iron as a Dopant on the Refractive Index of WO.

Results on studies of pure tungsten oxide WO and 2, 3 and 4% Fe-doped WO grown on the sapphire substrates by reactive pulsed laser deposition technique are reported. From X-ray diffraction it results that the crystalline structures changed with the substrate temperature and the peaks diffraction having a small shift by the amount of Fe content in WO lattice was noticed. Scanning electron microscopy presented a random behavior of WO nanocrystallites size with substrate temperatures.