1. Magnetic Materials Laboratory (LMM), Faculty of Exact Sciences, Djillali Liabes University of Sidi Bel-Abbes, Sidi Bel-Abbes, Algeria
2. Laboratory of Physicochemical Studies, University of Saida – Dr. Moulay Tahar, Saida, Algeria
3. Faculty of Sciences, Department of Physics, University of Saida – Dr. Moulay Tahar, Saida, Algeria
4. Technology Laboratory of Communication, University of Saida – Dr. Moulay Tahar, Saida, Algeria