1. State Key Lab of Rare Earth
Materials Chemistry and Applications, Peking University, Beijing 100871, China
2. Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong
SAR, China
3. Department of
Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong
SAR, China
4. School of Chemistry
and Chemical
Engineering, Anhui University, Hefei 230039,
Anhui, China