1. Berhampur University, Department of Physics, Berhampur, orissa, India, 760007, 06802282065, 06802270811;
2. Ravenshaw Univesity, Department of Physics, To, Dr Rabindranath Mishra, Reader in Physics, Ravenshaw University, Cuttack, Cuttack, orissa, India, 753003, 09437275380
3. Ravenshaw University, Department of Physics, To, Dr Rabindranath Mishra, Reader in Physics, Ravenshaw University, Cuttack, Cuttack, orissa, India, 753003, 09437275380;
4. Berhampur City College, Department of Physics, Berhampur, Odisha, India;
5. S.V.M. (Autonomous) College, Department of Physics, Jagatsinghpur, Odisha, India;