1. Advanced Materials Research Lab, Department of Basic and Applied Sciences, Punjabi University, Patiala 147 002, Punjab, India
2. Department of Physics, Punjabi University, Patiala 147 002, Punjab, India
3. Raja Ramanna Centre for Advanced Technology, P.O. CAT, Indore 452 013, M.P., India
4. Inter-University Accelerator Centre, New Delhi 110 067, India
5. Department of Physics, University of Petroleum and Energy Studies, Dehradun 248 007, Uttarakhand, India