1. CNRS, CEA, Spintec, Univ. Grenoble Alpes, 38058Grenoble, France
2. Chemistry of Thin Film Materials, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054Erlangen, Germany
3. CNRS, Institut Néel, Univ. Grenoble Alpes, 38058Grenoble, France
4. Chemistry of Thin Film Materials, Friedrich-Alexander Univ. Erlangen-Nürnberg, 91054Erlangen, Germany
5. National Center for Nano Fabrication and Characterization, Technical University of Denmark, 2800Kongens Lyngby, Denmark