1. International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, 686560, India
2. Mechanical Metallurgy Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
3. School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam, India
4. School of Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, 686560, Kerala, India
5. High Pressure & Synchroton Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
6. Homi Bhabha National Institute, Mumbai, 400094, India