1. The State Key Laboratory of Refractories and Metallurgy , Hubei Province Key Laboratory of Systems Science in Metallurgical Process, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan , P.R. China
2. Department of physics , Govt. College Women University, Sialkot, Punjab , Pakistan
3. Department of chemistry , Govt. College Women University, Sialkot, Punjab , Pakistan