1. State Key Laboratory of Superhard Materials
2. Key Laboratory of Automobile Materials of MOE
3. School of Materials Science and Engineering
4. Jilin University
5. Changchun 130012
6. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials
7. Hubei University
8. Wuhan 430062
9. P. R. China
10. School of Physics and Electronic Engineering
11. Hainan Normal University
12. Haikou 571158
13. China