1. Modelling and Simulation in Materials Science Laboratory, Physics Department, University of Sidi Bel-Abbes, 22000 Sidi Bel-Abbes, Algeria
2. Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, 01000 Kangar, Perlis, Malaysia
3. Department of Physics, Faculty of Science, University of Sidi-Bel-Abbes, 22000 Sidi-Bel-Abbes, Algeria