1. Department of Physics, Institute of Technical Education and Research, Siksha ‘O’ Anusandhan University, Khandagiri Square, Bhubaneswar, Odisha, India
2. Department of Physics, Tihidi College, Tihidi, Odisha, India
3. Department of Physics, VSSUT, Burla, Sambalpur, Odisha, India
4. School of Physics, Sambalpur University, Burla, Sambalpur, Odisha, India