1. Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13083-100, São Paulo, Brazil
2. Physics Department, Federal University of Minas Gerais, Belo Horizonte 30123-970, Minas Gerais, Brazil
3. Department of Physics, Synchrotron Radiation Research and NanoLund, Lund University, 22100 Lund, Sweden
4. Department of Physics, Federal University of Viçosa, Viçosa 36570-000, Minas Gerais, Brazil
5. Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13083-100, São Paulo, Brazil