1. Department of Materials Engineering; Federal University of Sao Carlos; Sao Carlos Sao Paulo Brazil
2. ICPEES-ECPM, ICPEES UMR CNRS 7515, Université De Strasbourg; 25 Rue Becquerel, 67087 Strasbourg Cedex 2 France
3. Department of Chemistry, Federal University of Minas Gerais; Belo Horizonte Brazil
4. Department of Materials Engineering, Engineering School of Sao Carlos; University of Sao Paulo; Sao Carlos Sao Paulo Brazil