1. Functional Nanomaterials Research Laboratory, Department of Physics, Doon University, Dehradun, Uttarakhand 248001, India
2. Department of Physics, Doon University, Dehradun, Uttarakhand 248001, India
3. Materials and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Indore 453552, India
4. Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi 110025, India
5. UGC-DAE Consortium for Scientific Research, University
Campus, Khandwa Road, Indore 452001, India
6. Department of Physics and Material Science and Engineering, Jaypee Institute of Information Technology, Noida 201307, India
7. Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 138634 Singapore
8. Department of Chemistry, School of Physical Sciences, Doon University, Dehradun 248001, India