1. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
2. Homi Bhabha National Institute, Mumbai, 400094, India
3. Materials Group, Bhabha Atomic Research Centre, Mumbai, 400085, India
4. High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
5. Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India