1Group of Functional Nanomaterials, Department of Physics, Federal University of Sergipe, CEP 49100, São Cristóvão, Sergipe, Brazil
2Institute of Nanoscience and Nanotechnology, Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto, 4169-007, Porto, Portugal
3Center of Exact and Technological Science, Federal University of Recôncavo of Bahia, Cruz das Almas, BA, 44380-000, Brazil
4LPMaT, Departamento de Engenharia de Materiais, Federal University of Amazonas, Manaus, AM, 69067-005, Brazil
5Group of Advanced Functional Materials (MAFA), Department of Physics, Federal University of São Carlos (UFSCar), São Carlos, SP, 13565-905, Brazil