1. Department of Physics, National Institute of Technology, Warangal, 506 004, Telangana, India
2. Department of Physical and Chemical Sciences, Sri Satya Sai University of Human Excellence, Kalaburagi, 585313, Karnataka, India
3. Metallurgical & Materials Engineering Department, National Institute of Technology, Warangal 506004, Telangana, India
4. Central Research Instrumentation Facility, National Institute of Technology, Warangal, 506004, Telangana, India