1. P. G. Department of Physics, Sardar Patel University, Vallabh Vidyanagar – 388120, Gujarat, India
2. Department of Applied & Interdisciplinary Sciences, CISST, Sardar Patel University, Vallabh Vidyanagar – 388120, Gujarat, India
3. Department of Physics, Natubhai V. Patel College of Pure & Applied Sciences, CVM University, Vallabh Vidyanagar – 388120, Gujarat, India
4. Department of Physics, Shri A. N. Patel P. G. Institute of Science and Research, Anand – 388001, Gujarat, India
5. Department of Physics, Indian Institute of Information Technology (Gandhinagar Campus), Vadodara – 382028, Gujarat, India