1. Materials Research Centre, Indian Institute of Science, Bangalore-560012, India
2. Department of Physics, Syamsundar College, University of Burdwan, East Bardhaman, West Bengal 713424, India
3. Central Research Laboratory, Bharat Electronics, Bangalore 560013, India
4. Institute of Physics, Bhubaneswar, Odisha – 751005, India
5. Homi Bhabha National Institute, Mumbai, Maharashtra – 400094, India