1. Department of Physics Khushal Khan Khattak University, Karak, Pakistan
2. Department of Physics Kohat University of Science and Technology, Kohat, Pakistan
3. Department of Chemistry, College of Sciences, Princess Nourah bint Abdulrahman University (PNU), P.O. Box 84428, Riyadh, 11671, Saudi Arabia
4. Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, P. O. Box, 9004, Saudi Arabia
5. Physics Dep., Faculty of Science, King Khalid University, P. O. Box 9004, Abha, Saudi Arabia
6. Dept. of Applied Science, Feroze Gandhi Institute of Engineering and Technology, Raebareli 229001, Uttar Pradesh, India
7. Department of Materials Science, Malawi University of Science and Technology, P. O. Box, 5196, Limbe, Malawi