1. King Abdulaziz University, Center of Nanotechnology, Department of Physics, Faculty of Science, Jeddah 21589, Saudi Arabia
2. Aligarh Muslim University, Department of Applied Physics, Aligarh-202002, India
3. Central Electro Chemical Research Institute (CSIR), Karaikudi-630006, Tamil Nadu, India
4. National Physical Laboratory, (CSIR), Dr. K. S. Krishnan Road, New Delhi 110 012, India
5. Islamic University, Department of Physics, Faculty of Science, Medina 42351, Saudi Arabia