1. Physics Department, Bule Hora University, P. O. BOX 144, Bule Hora, Ethiopia
2. Department of Agricultural Chemistry, National Taiwan University, Taipei, 10617, Taiwan
3. Laboratory of Materials Physics and Subatomic, Faculty of Science, University Ibn Tofail, BP. 133, 14000, Kénitra, Morocco
4. Department of Physics, Jorge Basadre Grohmann National University, Tacna, Peru