1. State Key Laboratory for Mechanical Behavior of Materials and School of Electronic and Information EngineeringXi'an Jiaotong University Xi'an 710049 China
2. School of Electronic Information and Artificial IntelligenceShaanxi University of Science and Technology Xi'an Shaanxi 710021 China
3. Electrical Insulation Research CenterInstitute of Materials ScienceUniversity Connecticut 97 North Eagleville Road Storrs CT 06269‐3136 USA
4. Department of Materials Science and EngineeringThe Pennsylvania State University University Park Pennsylvania 16802 USA
5. State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua University Beijing 100084 China
6. Department of Materials Science and Engineering and Shenzhen Engineering Research Center for Novel Electronic Information Materials and DevicesSouthern University of Science and Technology Shenzhen 518055 China