[1] The Ames Laboratory U.S. Department of Energy, Iowa State University, Ames,IA,50011-3020, United States
[2] School of Materials Science and Engineering, University of Science and Technology of Beijing, 100083, China
[3] Key Laboratory of Polar Materials and Devices (MOE), Shanghai Key Laboratory of Multidimensional Information Processing, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai,200241, China
[4] Department of Materials Science and Engineering, Iowa State University, Ames,IA,50011-2300, United States
[5] Ningbo Branch of Chinese Academy of Ordnance Science, Ningbo,315103, China
[6] School of Materials Science and Engineering, Tianjin University of Technology, Tianjin,300384, China