1. Institute of Nanostructured
Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan 450006, China
2. State Key Laboratory for Rare Earth Materials Chemistry
and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
3. School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
4. Beijing Center for Crystal Research and Development, Technical Institute
of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China