1. Department of Functional Materials, School of Materials Sciences and Technology, Guangdong University of Petrochemical Technology, Maoming 525000, China
2. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
3. Institute of Materials Science and Devices, Suzhou University of Science and Technology, Suzhou 215000, China
4. Department of Physics, School of Science, Guangdong University of Petrochemical Technology, Maoming 525000, China
5. Department of Physics, City University of Hong Kong, Kowloon 999077, Hong Kong, China