1. State Key Laboratory of Material Processing and Die and Mould TechnologySchool of Material Sciences and EngineeringHuazhong University of Science and Technology Wuhan 430074 P. R. China
2. State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of Sciences Shanghai 200050 P. R. China
3. Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
4. Center for High Pressure Science (CHiPS)State Key Laboratory of Metastable Materials Science and TechnologyYanshan University Qinhuangdao 066004 P. R. China
5. State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 P. R. China
6. Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistryTianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 P. R. China