Affiliation: | 1.Spectroscopy Department, Physics Division, National Research Center, 33 ElBehouth St., Dokki, 12311, Giza, Egypt ;2.Glass Department, Physics Division, National Research Center, 33 ElBehouth St., Dokki, 12311, Giza, Egypt ;3.Microwave and Dielectric Department, Physics Division, National Research Center, 33 ElBehouth St., Dokki, 12311, Giza, Egypt ;4.Thin Film and Electron Microscope Department, Physics Division, National Research Center, 33 ElBehouth St., Dokki, 12311, Giza, Egypt ; |