1. Department of Electronics and Communication Engineering; K.C.T Engineering College; Gulbarga 585 104 Karnataka India
2. Department of Physics; University of Tabuk; Tabuk 71491 Kingdom of Saudi Arabia
3. Department of Physics; PESIT-BSC; Bangalore 560100 India
4. Department of Physics; Government First Grade College; Guirmtkal 585124 India
5. Department of Physics, Faculty of Science; King Abdul Aziz University; 21589 Jeddah Saudi Arabia
6. Department of Physics; Hashemite University; PO Box 150459 Zarqa 13115 Jordan
7. Center for Advanced Materials; University of Houston; Houston TX 77204-5004 USA
8. Department of Engineering Chemistry; K.B.N College of Engineering; Gulbarga 585 104 Karnataka India