1. Departament of Chemical Engineering (COPPE) Federal University of Rio de Janeiro 128 Centro de Tecnologia Bl. G Rio de Janeiro 29141-972 Brazil
2. Departament of Metallurgircal and Materials Engineering Federal University of Rio de Janeiro Centro de Tecnologia, Bloco F Av. Horácio Macedo, 2030 Cidade Universitária Rio de Janeiro 21941-598 Brazil
3. Brazilian Center for Research in Physics Ministry of Science, Technology, Innovation and Communication of Brazil Rua Xavier Sigaud 150 Urca 22290-180 Brazil