1. Solid State and Materials Laboratory, Department of Chemistry, National Institute of Technology, Rourkela-769008, India
2. School of Basic Sciences, Indian Institute of Technology Mandi, Mandi-175005, H.P., India
3. Institute of Physics, Bhubaneswar-751005, India
4. Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400085, India
5. UGC-DAE Consortium for Scientific Research, Mumbai Centre, BARC, Maharashtra-400085, India