1. School of Materials Science and Nanotechnology, Jadavpur University, Kolkata-700032, India
2. Agricultural and Ecological Research Unit, Biological Science Division, Indian Statistical Institute, Giridih, Jharkhand, India
3. Department of Physics, Jadavpur University, Kolkata-700032, India
4. Eko X-Ray & Imaging Institute, 54, Jawaharlal Nehru Road, Kolkata-700071, India
5. XRD and SEM Units, Materials Characterization and Instrumentation Division, CSIR-Central Glass and Ceramic Research Institute, India