1. PG & Research Department of Physics, N. M. S. S. Vellaichamy Nadar College, Madurai 625019, Tamilnadu, India
2. Department
of Electrical Engineering, Karunya University, Coimbatore 641114, Tamilnadu, India
3. Department
of Physics and Nanotechnology, SRM University, Kattankulathur 603203, Tamilnadu, India
4. Functional
Materials Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, Tamilnadu, India
5. School
of Physics, Department of Theoretical Physics, Madurai Kamaraj University, Madurai 625021, Tamilnadu, India
6. UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452001, India
7. Department
of Physics, Arul Anandar College, Karumathur, Madurai 625514, Tamilnadu, India