Al-Taa’y, Wasan A., and Bushra A. Hasan. 2021. “Structural and Optical Properties of TiO2:NiO Nanoparticles Thin Films Prepare by Chemical Spray Pyrolysis”. Iraqi Journal of Physics 19 (49): 22-31. https://doi.org/10.30723/ijp.v19i49.632.