1. Max Planck Institute for Chemical Physics of Solids Nöthnitzerstr. 40 01187 Dresden Germany
2. Faculty of Chemistry and Food Chemistry Technical University 01069 Dresden Germany
3. Institute for Chemistry of New Materials University of Osnabrück Barbarastraße 7 49069 Osnabrück Germany
4. M. N. Mikheev Institute of Metal Physics Ural Branch of Russian Academy of Sciences 620041 Ekaterinburg Russia
5. Max Planck Institute for Solid State Research Heisenbergstr. 1 70569 Stuttgart Germany
6. Ural Federal University 620002 Ekaterinburg Russia
7. II. Physikalisches Institut Universität zu Köln Zülpicher Str. 77 50937 Köln Germany