1. Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, Maharashtra, India
2. Department of Physics, Vinayak Vidnyan Mahavidyalaya, Nandgaon Khandeshwar, Amravati 444708, Maharashtra, India
3. Department of Physics, Shri Shivaji Science College, Amravati 444603, Maharashtra, India