1. Department of Chemistry University of Zurich Winterthurerstrasse 190 CH‐8057 Zurich Switzerland
2. Institut Laue‐Langevin 71 Avenue des Martyrs, CS 20156 Grenoble Cedex 9 38042 France
3. Department of Mechanical and Process Engineering ETH Zurich Sonneggstrasse 3 CH‐8092 Zurich Switzerland
4. Electron Microscopy Center Empa Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH‐8600 Dübendorf Switzerland