1. Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India
2. Post Graduate and Research Department of Physics, The American College, Madurai 625002, Tamil Nadu, India
3. Department of Physics, Tilakdhari Postgraduate College, Jaunpur 222002, Uttar Pradesh, India
4. Department of Physics, Institute of Applied Sciences and Humanities, GLA University, Mathura 281406, Uttar Pradesh, India