1. Functional Energy Nanomaterials Group, Materials Sciences Division, Poornaprajna Institute of Scientific Research, Devanahalli, Bengaluru 562110, India
2. Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
3. Industrial Accelerators Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
4. Department of Physics, Manipal Institute of Technology, Manipal Academy of higher education (MAHE), Manipal 576104, Karnataka, India