1. M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 18 S. Kovalevskaya Str., Yekaterinburg 620137, Russia
2. Institute of Natural Sciences and Mathematics, Ural Federal University, 19 Mira St., Yekaterinburg 620002, Russia
3. Bayerisches Geoinstitut, Universität Bayreuth, Universitätsstrasse 30, D-95447 Bayreuth, Germany
4. Institute for Solid State Chemistry of Ural Branch of Russian Academy of Sciences, 91 Pervomayskaya St., Yekaterinburg 620219, Russia