1. Department of Physics, S.N. Arts, D.J.M. Commerce and B.N.S. Science College (Autonomous), Sangamner, Ahmednagar, 422 605, M.S., India
2. Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Govt. of India, Panchawati, Off Pashan Road, Pune 411007, India
3. MIT World Peace University (MIT-WPU), Paud Rd, Kothrud, Pune, Maharashtra 411038, India