1. Department of Electricity and Electronics, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
2. BCMaterials, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
3. Institut Laue-Langevin, 71 Avenue des Martyrs, 38000 Grenoble, France
4. Department of Physics, Universidad Pública de Navarra, Campus de Arrosadía, 31006 Pamplona, Spain
5. Institute for Advanced Materials (INAMAT), Universidad Pública de Navarra, Campus de Arrosadía, 31006 Pamplona, Spain
6. Department of Applied Physics II, University of the Basque Country UPV/EHU, 48940 Leioa, Spain