1. M.N. Mikheev Institute of Metal Physics Ural Branch of the Russian Academy of Sciences 620108 Yekaterinburg Russia
2. Institute of Natural Sciences and Mathematics Ural Federal University 620002 Yekaterinburg Russia
3. Department of Geology and Geophysics Ural State Mining University 620144 Yekaterinburg Russia
4. Fachbereich Physik Universität Osnabrück D-49069 Osnabrück Germany
5. Institute of Chemical Technology Ural State Forest Engineering University 620100 Yekaterinburg Russia
6. Institute of Physics and Technology Ural Federal University 620002 Yekaterinburg Russia
7. Institute of Solid State Chemistry Ural Branch of the Russian Academy of Sciences 620990 Yekaterinburg Russia