The tin doping effect on the physicochemical and nonlinear optical properties of the manganese oxide (Mn3O4: Sn) thin filmsZaid Rossi, Hajar Ghannam, Bilal Brioual, Shafi Ullah, Mohamed Zanouni, Mustapha Diani, Abdesamad Aouni and Mohammed AddouE3S Web of Conf., 469 (2023) 00078DOI: https://doi.org/10.1051/e3sconf/202346900078