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, China
2. Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
3. Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021 Russia
4. State
Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China