1. Department of Physics, DAV University, Sarmastpur, Jalandhar 144012, Punjab, India
2. VFD Quality Control Division, Semi-Conductor Laboratory, Sector 72, SAS Nagar, Mohali-160071, India
3. Department of Nano Science and Materials, Central University of Jammu, Rahya Suchani (Bagla), Samba-181143, UT of J & K, India