Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education Xi'an Jiaotong University, Xi'an 710049, China;
International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China;
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education Xi'an Jiaotong University, Xi'an 710049, China;
International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China;
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education Xi'an Jiaotong University, Xi'an 710049, China;
International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China;