1. Novel Materials Research Laboratory, Department of Physics, Barkatullah University, Bhopal 462026, India
2. CSIR-National Physical Laboratory, Dr. K. S. Krishnan Road, New Delhi 110012, India
3. Department of Physics, AMSD College, Dhaula Kuan, New Delhi 110021, India
4. Rechargion Energy Pvt Ltd, D301, Yuthika Apartments, Baner, Pune 411045, India