1. Department of Physics, Faculty of science , Imam Abdulrahman bin Faisal University , PO 383 , Dammam 31113 , Saudi Arabia
2. Department of Physics , University of Education , Lahore, Multan Campus, Bosan Road , Multan , Pakistan
3. Department of Physics , COMSATS University Islamabad , Islamabad 44000 , Pakistan , Phone: +923336188352
4. Department of Physics , COMSATS University Islamabad , Islamabad 44000 , Pakistan
5. Department of Physics , Quaid-e-Azam Campus, University of the Punjab , Lahore-54000 , Pakistan
6. Department of Physics and Astronomy , College of Science, King Saud University , Riyadh 11451 , Saudi Arabia