1. Wuhan National Laboratory for Optoelectronics (WNLO) School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 P. R. China
2. The State Key Laboratory of Refractories and Metallurgy Institute of Advanced Materials and Nanotechnology Wuhan University of Science and Technology Wuhan 430081 P. R. China
3. College of Architecture and Materials Engineering Hubei University of Education Gaoxin Road 129 Wuhan 430205 P. R. China
4. Department of Metallurgy and Materials Science Sakarya University Sakarya 54050 Turkey
5. Department of Physics Department of Materials Science and Engineering and Department of Biomedical Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong 999077 P. R. China