1. Physics Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
2. Department of Physics, and Nanotechnology Research Unit, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
3. Physics Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
4. Department of Physics, Faculty of Science, University of Jeddah, P.O Box 80327, Jeddah, 21589 Saudi Arabia