1. CAS Key Laboratory of Design and Assembly of Functional Nanostructures; Fujian Provincial Key Laboratory of Nanomaterials; Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou Fujian Province P. R. China
2. Xiamen Institute of Rare Earth Materials; Haixi Institute; Chinese Academy of Science; Xiamen 361021 P. R. China
3. Graduate University of Chinese Academy of Sciences; Beijing 100049 China