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