1. Department of Materials Science, Glass and Ceramics Group University of Erlangen‐Nürnberg Erlangen Germany
2. Department of Materials Science and Engineering Delft University of Technology Delft The Netherlands
3. Department of Materials Science and Engineering, Institute of Micro‐ and Nanostructure Research (WW9) & Center for Nanoanalysis and Electron Microscopy (CENEM) FAU Erlangen‐Nürnberg Erlangen Germany