1. Department of Physics, Savitribai Phule Pune University, Pune, 411007 Maharashtra, India
2. Center for Modeling and Simulation, Savitribai Phule Pune University, Pune, 411007 Maharashtra, India
3. Defence Metallurgical Research Laboratory, Hyderabad 500058, India
4. Department of Mechanical Engineering, University of Texas at El Paso, El Paso, Texas 79968, USA