1. State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
2. School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 China
3. Engineering Research Center of Nano‐Geomaterials of Ministry of Education Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 430074 P. R. China
4. Laboratory of Crystal Physics Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk 660036 Russia
5. Department of Engineering Physics and Radioelectronics Siberian Federal University Krasnoyarsk 660041 Russia
6. Department of Physics Far Eastern State Transport University Khabarovsk 680021 Russia
7. School of Material Science and Engineering Shandong University Jinan 266071 P. R. China
8. School of Applied Physics and Materials Wuyi University Jiangmen Guangdong 529020 P. R. China