1. Laboratory of Physical Materials, Microelectronics, Automatics and Heat Transfer (LPMMAT), Faculty of Sciences, Hassan II University of Casablanca, Casablanca 20000, Morocco e-mail:
2. Laboratory of Physical Materials, Microelectronics, Automatics and Heat Transfer (LPMMAT), Faculty of Sciences, Hassan II University of Casablanca, Casablanca 20000, Morocco e-mails: ;