1. Functional Materials Laboratory
2. College of Materials Science and Engineering
3. Xi'an University of Architecture and Technology
4. Xi'an 710055
5. China
6. School of Chemical Engineering
7. Northwest University
8. Xi'an 710069
9. Key Laboratory of the Ministry of Education
10. International Center for Dielectric Research
11. School of Electronic Science and Engineering
12. Xi'an Jiaotong University
13. Xi'an 710049