1. Kiel University, Kiel, Germany
2. Fraunhofer ISIT-Institute for Silicon Technology, Kiel, Germany
3. Department of Materials Science, Kiel University, Kiel, Germany
4. Faculty of Engineering, Kiel, Germany
5. Christian Albrechts University Kiel (CAU), Kiel, Germany
6. Northeastern University, Boston, MA, USA
7. W.M. Keck Laboratory for Integrated Ferroics, Northeastern University, Boston, MA, USA