1. Department of Physics, CMS College, MG University, Kottayam, Kerala 686560, India
2. Department of Physics, Mother Teresa Women’s University, Kodaikanal 624102, India
3. Department of Physics, Alagappa University, Karaikudi, Tamil Nadu 630003, India
4. Materials Science Division, Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
5. Department of Physics, Erode Sengunthar Engineering College, Erode 638057, India