1. Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Straße 2, 64287 Darmstadt, Germany
2. Institute of Electromechanical Design, Technische Universität Darmstadt, Merckstraße 25, 64283 Darmstadt, Germany
3. Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA
4. Department of Materials Science and Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway