1. Thin Film Device Fabrication & Characterisation Laboratory, Department of Physics, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
2. Department of Physics, The M. S. University of Baroda, Pratapgunj, Vadodara 390002, Gujarat, India
3. Material Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland
4. Planetary Science Division, Physical Research Laboratory, Ahmedabad 380009, Gujarat, India