1. Physics Institute Federal University of Rio Grande do Sul (IF/UFRGS) Porto Alegre Brazil
2. Department of Materials Engineering São Carlos Engineering School University of São Paulo (EESC/USP) São Carlos Brazil
3. Center for Research Technology, and Education in Vitreous Materials (CeRTEV) Federal University of São Carlos (UFSCar) São Carlos Brazil
4. Physics Department Federal University of Lavras (DFI/UFLA) Lavras Brazil
5. Department of Materials Engineering Federal University of São Carlos (UFSCar) São Carlos Brazil