1. Electronic Materials Research Laboratory; Key Laboratory of the Ministry of Education & International Center for Dielectric Research; Xi'an Jiaotong University; Xi'an Shaanxi China
2. Xi'an Jiaotong University Suzhou Academy; Suzhou Jiangsu China
3. Department of Materials Science and Engineering; University of Sheffield; Sheffield UK
4. Micro-optoelectronic Systems Laboratories; Xi'an Technological University; Xi'an Shaanxi China
5. National Synchrotron Radiation Laboratory; University of Science and Technology of China; Anhui Hefei China
6. School of Science; Xi'an Polytechnic University; Xi'an China