1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure
2. Shanghai Institute of Ceramics, Chinese Academy of Sciences
3. Shanghai 200050
4. China
5. Centre of Materials Science and Optoelectronics Engineering
6. State Key Laboratory of Rare Earth Materials Chemistry and Applications
7. Beijing National Laboratory for Molecular Sciences
8. College of Chemistry and Molecular Engineering
9. Peking University
10. Beijing 100871
11. CAS Centre for Excellence in Superconducting Electronic (CENSE)