1. Department of Physics, Guru Jambheshwar University of Science & Technology, Hisar 125001, Haryana, India
2. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
3. Homi Bhabha National Institute, Mumbai 400094, India
4. Technical Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
5. Department of Physics, Vaish College, Rohtak 124001, India