1. Condensed Matter Physics Division
2. Saha Institute of Nuclear Physics
3. Kolkata 700064
4. India
5. K.K.M. College
6. Department of Physics
7. The University of Burdwan
8. Burdwan 713104
9. K.S.S. College
10. Pondicherry University
11. R.V. Nagar
12. Kalapat
13. Pondicherry 605014