1. Department of Physics, College of Science, Sudan University of Science and Technology, Khartoum 11113, Sudan
2. Physics Department, College of Science, Al-Imam Mohammad Ibn Saud Islamic University, Riyadh 11642, Saudi Arabia
3. Department of Physics, Faisal University, Aldamam, Saudi Arabia
4. Computational Materials Science Group, Department of Physics, University of Eldoret, P.O. Box 1125-30100 Eldoret, Kenya
5. Department of Physics, College of Science, Taibah University, Yanbu, Saudi Arabia