Fundamental studies of magneto-optical borogermanate glasses and derived optical fibers containing Tb3+ - Franco, Douglas Faza; Fernandes, Roger Gomes; Felix, Jorlandio F.; Mastelaro, Valmor Roberto; Eckert, Hellmut; Afonso, Conrado R. M.; Messaddeq, Younes; Messaddeq, Sandra; Morency, Steeve; Nalin, Marcelo (Journal of Materials Research and Technology, 2021)