1. Nanoscience and Nanotechnology Unit E.N.S. Rabat, Energy Research Center, Mohammed V University, B.P. 5118, Takaddoum Rabat, Morocco
2. College of Sciences, Department of Physics, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11623, Saudi Arabia
3. Department of Physics, Kuwait University, Safat 13060, Kuwait