1. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
2. Micro-optoelectronic Systems Laboratories, Xi’an Technological University, Xi’an 710032, Shaanxi, People’s Republic of China
3. National Synchrotron Radiation
Laboratory, University of Science and Technology of China, Anhui 230029, Hefei, People’s Republic of China
4. School of Science, Xi’an University of Architecture & Technology, Xi’an 710055, Shaanxi People’s Republic of China
5. State Key Laboratory of New Ceramics
and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China