1. Université Grenoble Alpes; Grenoble France
2. CEA; INAC-SP2M; Grenoble France
3. CNRS; Institut Néel; Grenoble France
4. CEA, LETI; MINATEC Campus; Grenoble France
5. Department of Materials Science and Engineering; University of Illinois; Champaign Illinois U.S.A.