[1] Islamia Univ, Inst Phys, Bahawalpur 63100, Pakistan
[2] Bahauddin Zakariya Univ, Dept Phys, Multan 6000, Pakistan
[3] King Khalid Univ, Dept Chem, Fac Sci, POB 9004, Abha 61413, Saudi Arabia
[4] Govt Sadiq Coll Women Univ Bahawalpur, Dept Phys, Bahawalpur 63100, Pakistan
[5] Bahaudin Zakariya Univ, Dept Informat Technol, Multan 60000, Pakistan
[6] Pakistan Inst Engn & Technol, Dept Comp Sci, Multan, Pakistan
[7] Islamia Univ Bahawalpur, Inst Chem, Bahawalpur, Pakistan