1. The State Key Laboratory of Refractories and Metallurgy
2. Institute of Advanced Materials and Nanotechnology
3. Wuhan University of Science and Technology
4. Wuhan 430081
5. China
6. Wuhan National Laboratory for Optoelectronics (WNLO)
7. School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074
8. Department of Physics
9. Arizona State University
10. Tempe 85281
11. USA
12. Department of Physics and Department of Materials Science and Engineering
13. City University of Hong Kong
14. Kowloon