1. Center for Crystal R&D; Key Lab of Functional Crystals and Laser Technology of Chinese Academy of Sciences; Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; Beijing 100190 China
2. University of Chinese Academy of Sciences; Beijing 100049 China
3. Laboratory of Crystal Physics; Kirensky Institute of Physics; SB RAS; Krasnoyarsk 660036 Russia
4. Department of Physics; Far Eastern State Transport University; Khabarovsk 680021 Russia
5. Key Laboratory of Cryogenics; Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; Beijing 100190 China
6. Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou Fujian 350002 China
7. State Key Laboratory for Rare Earth Materials Chemistry and Applications; College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
8. Department of Physical Chemistry; University of Science and Technology Beijing; Beijing 100083 China