1. Electronic Materials Research Laboratory
2. Key Laboratory of the Ministry of Education & International Center for Dielectric Research
3. Xi'an Jiaotong University
4. Xi'an 710049
5. China
6. Micro-optoelectronic Systems Laboratories
7. Xi'an Technological University
8. Xi'an 710032
9. State Key Laboratory of New Ceramics and Fine Processing
10. Department of Materials Science and Engineering
11. Tsinghua University
12. Beijing 100084
13. PR China
14. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
15. Jilin University
16. Changchun 130021