1. Department of Physics, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
2. Shri A. N. Patel Post Graduate Institute of Science and Research, Anand 388120, Gujarat, India
3. Department of Physical Sciences, P. D. Patel Institute of Applied Sciences, Charotar University of Science and Technology, Changa 388421, Gujarat, India
4. Department of Materials Science, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
5. Department of Physics, Faculty of Science, The M.S University of Baroda, Vadodara 390002, Gujarat, India