1. School of Materials Science and Nanotechnology, Jadavpur University, Kolkata 700032, West Bengal, India
2. Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur, Kharagpur 721302, West Bengal, India
3. XRD and SEM Units, Materials Characterization & Instrumentation Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, West Bengal, India
4. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
5. Department of Physics, Krishnath College, Berhampore 742101, West Bengal, India