1. Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
2. CENIMAT/I3N, Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
3. CENIMAT/I3N, Faculty of Science and Technology, Materials Science Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal