1. School of Physics and Electronic Science
2. Shanghai Key Laboratory of Magnetic Resonance
3. East China Normal University
4. Shanghai 200241
5. P. R. China
6. Department of Molten Salt Chemistry and Engineering
7. Shanghai Institute of Applied Physics
8. Chinese Academy of Sciences
9. Shanghai 201800
10. China
11. International Center for Materials Nanoarchitectonics (WPI-MANA)
12. National Institute for Materials Science
13. Tsukuba
14. Japan