1. Department of Physics, University of Wah, Wah Cantt, 47040, Pakistan
2. School of Materials Science & Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China
3. Department of Physics, The University of Lahore, Sub-campus Sargodha, 40100, Pakistan
4. Department of physics, College of Science, King Khalid University, Abha 61413, Saudi Arabia