1. Technical Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
2. Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
3. Department of Materials Science and Engineering, Institute of Engineering and Technology, Srinivas University, Mukka 574146, Mangalore, Karnataka, India
4. Analytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
5. Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Srinivasnagar 575025, Mangalore, Karnataka, India