1. Instituto de Micro y Nanotecnología IMN‐CNM CSIC (CEI UAM+CSIC) Isaac Newton Tres Cantos Madrid 8, E‐28760 Spain
2. Instituto de Ciencia de Materiales de Madrid ICMM‐CSIC Madrid 28049 Spain
3. National Institute for Aerospace Technology (INTA) Payloads and Space Science Department Space Magnetism Area Torrejón de Ardoz Madrid 28850 Spain
4. LENS‐MIND Department of Electronics and Biomedical Engineering Universitat de Barcelona Barcelona 08028 Spain
5. Institute of Nanoscience and Nanotechnology (IN2UB) Universitat de Barcelona Barcelona 08028 Spain