1. Department of Physics, Bundelkhand University, Jhansi (U.P.), India
2. Department of Physics, Rajiv Gandhi University of Knowledge Technologies (AP-IIIT), RK Valley, India
3. Department of Physics, Indian Institute of Technology, Kharagpur, (W.B.), India
4. Department of Applied Physics, Delhi Technological University, Delhi, India
5. Department of Metallurgical Engineering, National Institute of Technology, Raipur, Chhatisgarh, India