1 School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
2 Shagnhai Institute of Ceramics, Chinese Academy of Science, Shanghai 201899, China
3 Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
4 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800, China
5 School of Physics Science and Engineering, Institute for Advanced Study, Tongji University, Shanghai 200092, China
6 Institute of Low Temperature and Structure Research PAS. Okolna 2 Street, Wroclaw 50-422, Poland