1. Institute of Physics, The Islamia University of Bahawalpur, Pakistan
2. Nanoscience and Technology Development, National Center for Physics (NCP), Pakistan
3. Chemistry Department, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 6141, Saudi Arabia
4. Department of Physics, College of Science, Qassim University, Buraydah 51452, Qassim, Saudi Arabia
5. Department of Physics, Government College University, Faisalabad, Pakistan