1. Department of Physics, National Institute of Technology Silchar, Silchar 788010, India
2. Department of Physics, School of Natural Sciences, Shiv Nadar University, NH-91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh 201 314, India
3. Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
4. Department of Electronics and Instrumentation Engineering, National Institute of Technology Silchar, Silchar 788010, India
5. Department of Applied Science and Humanities, Assam University, Silchar 788011, India