1. Department of Physics, Sardar Patel University, Vallabh Vidyanagar, Anand, Gujarat 388120, India
2. Department of Paramedical Science, Charotar Institute of Paramedical Science, CHARUSAT, Changa 388421, India
3. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Anand, Gujarat 388120, India
4. Department of Physical Sciences, P. D. Patel Institute of Applied Science, CHARUSAT, Changa 388421, India
5. Sophisticated Instrumentation Centre for Applied Research and Testing (SICART), Mota Bazaar, Vallabh Vidyanagar, Anand, Gujarat 388 120, India