1. Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow 119991, Russia
2. M. V. Lomonosov Moscow State University, Leninskye Gory 1, Moscow 119991, Russia
3. The Institute of Experimental Mineralogy, Russian Academy of Sciences, Chernogolovka, Moscow Region 142432, Russia
4. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow District 142432 Russia