International Journal of Academic and Applied Research (IJAAR)   Year: 2021 | Volume: 5 | Issue: 4 | Page No.: 134-138 Optical Properties of Different Thin Film Thickness for (Fe3O4 - Ni2O3) Nano Material Using UV- Spectroscopy Al desogi Omer Hamed, Kh M. Haroun, Emtithal Ahmed Jadallah, Abdalsakhi. S. Mohammed, Adam Mohammed Adam Bakheet Abstract: Thin film of (Fe3O4 and Ni2O3) Nano-material deposited on ITO glass substrate by spin coating method with different thicknesses (55.25, 78.7, 90.9 144.9 and 263.15) nm for each. Film thickness was measured by using the weight method. In this work study the effaced of different thicknesses on the optical parameters. For all samples the absorbance increases upon decreasing the thicknesses, while the transmission increases upon decreasing thicknesses and the reflectance in the wavelength 0.196nm is equal for all thicknesses.