1. Laboratoire de Physique du Solide-Faculté des Sciences Dhar El Mehraz-Fes, Morocco
2. Laboratory of Materials, Processes, Environment and Quality, National School of Applied Sciences, Cadi Ayyed University, Safi, Morocco
3. Institute of Nanomaterials and Nanotechnologies, MAScIR, Rabat, Morocco
4. Equipe de Physique du Solide, Laboratoire LIPI, Ecole Normale Supérieure, Bensouda, Fes, Morocco