1. Institute of Solid State Chemistry of the Ural Branch of the Russian Academy of Sciences, Pervomayskaya Str. 91, 620990 Ekaterinburg, Russia
2. St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia
3. Institute of Solid State Physics, Dresden University of Technology, D-01062 Dresden, Germany
4. Departamento de Fisica de Materiales and CFM-MPC UPV/EHU, Donostia International Physics Center (DIPC), 20080 San Sebastian, Spain
5. IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
6. Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
7. M.V. Lomonosov Moscow State University, Leninskie Gory 1/3, 199991 Moscow, Russia