1. School of Metallurgy and Environment
2. Central South University
3. Changsha 410083
4. P. R. China
5. State Key Laboratory of Functional Materials for Informatics
6. Shanghai Institute of Microsystem and Information Technology (SIMIT)
7. Chinese Academy of Sciences
8. Shanghai 200050
9. School of Materials Science and Engineering
10. Zhejiang University
11. Hangzhou 310027
12. Citic Dameng Mining Industries Limited