| Title | Dislocation-induced large local polarization inhomogeneity of ferroelectric materials |
| Authors | Li, Ning Zhu, Ruixue Cheng, Xiaoxing Liu, Heng-Jui Zhang, Zhangyuan Huang, Yen-Lin Chu, Ying-Hao Chen, Long-Qing Ikuhara, Yuichi Gao, Peng |
| Affiliation | Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China Peking Univ, Electron Microscopy Lab, Sch Phys, Beijing 100871, Peoples R China Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA Natl Chung Hsing Univ, Dept Mat Sci & Engn, Taichung 40227, Taiwan Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan Acad Sinica, Inst Phys, Taipei 11529, Taiwan Univ Tokyo, Inst Engn Innovat, Tokyo 1138656, Japan Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China |
| Issue Date | 15-Mar-2021 |
| Publisher | SCRIPTA MATERIALIA |
| Abstract | Dislocations in ferroelectrics play important roles in ferroelectricity, piezoelectricity, and dielectricity. However, the intrinsic charge-lattice coupling mechanism in ferroelectric crystals containing dislocations is still not well understood. Here, we report a large local polarization inhomogeneity of similar to 100 mu Ccm(-2) induced by a single a[001] dislocation in the PbZr0.2Ti0.8O3/SrTiO3 film/substrate heterostructure, the tensile region (similar to 120 mu Ccm(-2)) and the compressive strain region (similar to 21 mu Ccm(-2)) around the dislocation forms a butterfly-like area. This study reveals the dramatic effects of dislocations on local polarization and provides a strategy to manipulate the polarization magnitude and orientation of local polarization by defect engineering. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/610365 |
| ISSN | 1359-6462 |
| DOI | 10.1016/j.scriptamat.2020.11.009 |
| Indexed | SCI(E) |
| Appears in Collections: | 量子材料科学中心 物理学院 |
