1. Chemistry Department, Moscow State University, 119991, Moscow, Russia
2. Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre, Russian Academy of Sciences, 14 Fersman Str, Apatity 184209, Russia
3. Institute of Solid State Physics of Russian Academy of Sciences (ISSP RAS), 142432 Chernogolovka, Russia
4. Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119991, Moscow, Russia
5. Institute of Physics, University of Tartu, W. Ostwald Str. 1, 50411 Tartu, Estonia
6. International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
7. EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Belgium
8. Buryat State University, Smolin St. 24a, Ulan-Ude, 670000 Buryat Republic, Russia