Dislocation-induced large local polarization inhomogeneity of ferroelectric materials

Ning Li, Ruixue Zhu, Xiaoxing Cheng, Heng Jui Liu, Zhangyuan Zhang, Yen-Lin Huang, Ying-Hao Chu, Long Qing Chen, Yuichi Ikuhara, Peng Gao*

*此作品的通信作者

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

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 ~100 μCcm−2 induced by a single a[001] dislocation in the PbZr0.2Ti0.8O3/SrTiO3 film/substrate heterostructure, the tensile region (~120 μCcm−2) and the compressive strain region (~21 μCcm−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.

原文English
文章編號113624
頁(從 - 到)1-5
頁數5
期刊Scripta Materialia
194
DOIs
出版狀態Published - 15 3月 2021

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