Sichuan University, College of Architecture and Environment, MOE Key Laboratory of Deep Earth Science and Engineering; University of Washington - Department of Mechanical Engineering
University of Washington - Department of Mechanical Engineering; Zhejiang University, Faculty of Engineering, School of Aeronautics and Astronautics, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province
University of Washington - Department of Mechanical Engineering; Chinese Academy of Sciences (CAS), Shenzhen Institutes of Advanced Technology, Shenzhen Key Laboratory of Nanobiomechanics
University of Washington - Department of Mechanical Engineering; Xi'an Jiaotong University (XJTU), School of Aerospace Engineering, State Key Laboratory for Strength and Vibration of Mechanical Structures
Abstract
Tetragonal-to-monoclinic Bi4ti3O12 (BIT) exhibits complicated domain patterns thanks to its two independently switchable spontaneous polarizations that lie in the ac plane of the monoclinic unit cell. Utilizing the nonlinear theory of ferroelectric phase transformation based on the deformation gradient tensor and spontaneous polarization, we systematically analyzed domain patterns in BIT, classifying its domain walls (DWs) into five different classes. Three-dimensional piezoresponse force microscopy (3D PFM) was then adopted to characterize the ceramic BIT, revealing intriguing domain patterns in planar, lateral, as well as tilted grains. Guided by the nonlinear theoretical analysis, 3D polarization distributions were successfully reconstructed, wherein 9°-, 90°-, 91°-, and 180°-DWs were observed along with 171°-charged DWs. The nonlinear analysis is thus confirmed by 3D PFM characterizations, and the combined theoretical analysis and experimental investigation contribute to our understanding on the 3D tetragonal-to-monoclinic ferroelectric domain patterns.
Keywords: Bi4Ti3O12, 3D PFM, domain pattern, polarization distribution, Tetragonal-to-monoclinic transformation
Xie, Shaoxiong and Chen, Yu and Xia, Guozhan and Huang, Boyuan and Liu, Cong and Wang, Qingyuan and Li, Jiangyu and Liu, Wenyuan, Three-Dimensional Domain Patterns in Tetragonal-to-Monoclinic Bi
4ti
3O
12 Ceramics: Nonlinear Analysis and Piezoresponse Force Microscopy Imaging (June 9, 2019). Available at SSRN: https://ssrn.com/abstract=3401360 or http://dx.doi.org/10.2139/ssrn.3401360
University of Washington - Department of Mechanical Engineering
Seattle, WA 98195 United States
Zhejiang University, Faculty of Engineering, School of Aeronautics and Astronautics, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province
Download This Paper