1. Electronic Materials Research Laboratory
2. Key Laboratory of the Ministry of Education
3. International Center for Dielectric Research
4. Xi'an Jiaotong University
5. Xi'an 710049
6. Micro-optoelectronic Systems Laboratories
7. Xi'an Technological University
8. Xi'an 710032
9. China
10. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
11. Jilin University
12. Changchun 130021