1. The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering; University of Science and Technology Beijing; Beijing 100083 P. R. China
2. Laboratory of Crystal Physics; Kirensky Institute of Physics, Federal Research Center KSC SB RAS; Krasnoyarsk 660036 Russia
3. Siberian Federal University; Krasnoyarsk 660041 Russia
4. Department of Physics; Far Eastern State Transport University; Khabarovsk 680021 Russia