1. CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People’s Republic of China
2. School of Metallurgy and Chemical Engineering, Jiangxi University of Science & Technology, Ganzhou 341000, China
3. Ganzhou Rare Earth Group Company, Limited, Ganzhou, 341000, China