1. Ceramic Materials Engineering (CME), University of Bayreuth, D-95440 Bayreuth, Germany
2. Inorganic Chemistry IV, University of Bayreuth, Universitätsstr. 30, NW I, 95440 Bayreuth, Germany
3. Université Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France
4. Department of Applied Mechanics and Fluid Dynamics, University of Bayreuth, D-95440 Bayreuth, Germany