1. Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Catalonia, Spain
2. Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930 Catalonia, Spain
3. Department of Chemistry, University of Barcelona, 08028 Barcelona, Catalonia, Spain
4. ALBA Synchrotron, 08290 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
5. Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Barcelona, Catalonia, Spain
6. Department of Physics and Astronomy “Ettore Majorana”, University of Catania, via S. Sofia 64, 95123 Catania, Italy
7. CNR-IMM, via S. Sofia 64, 95123 Catania, Italy
8. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education & School of Physical Science & Technology, Lanzhou University, 730000 Lanzhou, China
9. School of Chemistry, South China Normal University, 510006 Guangzhou, China
10. ICREA, Passeig Lluìs Companys 23, 08010 Barcelona, Catalonia, Spain