1. Nanomaterials Research Laboratory, Department of Materials Science and Nanotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131039, Haryana, India
2. Department of Physics, National Institute of Technology, Kurukshetra 136119, Haryana, India
3. Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131039, Haryana, India