1. Department of Physics, Faculty of Science and Letters, Siirt University, Siirt, Turkey
2. Department of Physics, Faculty of Sciences, Harran University, Sanliurfa, Turkey
3. Department of Material Science and Engineering, Faculty of Engineering, Hakkari University, Hakkari, Turkey
4. Nanotechnology Research Center, Bilkent University, Ankara, Turkey
5. International Scientific Center, Baku State University, Baku, Azerbaijan