1. Department of Physics, Indian Institute of Technology (IIT), Delhi, New Delhi 110016, India
2. Chemistry Division, Bhabha Atomic Research Centre (BARC), Mumbai 400085, India
3. Applied Sciences Cluster, University of Petroleum & Energy Studies (UPES), Dehradun 248007, India
4. Material Science Group, Inter-University Accelerator Centre (IUAC), New Delhi 110067, India
5. Department of Physics, Indian Institute of Technology (IIT) Kharagpur, Kharagpur 721302, India