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

doi:10.1016/j.scriptamat.2020.11.009

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

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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 ~100 μCcm⁻² induced by a single a[001] dislocation in the PbZr_0.2Ti_0.8O₃/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.

Original language	English (US)
Article number	113624
Journal	Scripta Materialia
Volume	194
DOIs	https://doi.org/10.1016/j.scriptamat.2020.11.009
State	Published - Mar 15 2021

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2020.11.009

Cite this

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title = "Dislocation-induced large local polarization inhomogeneity of ferroelectric materials",

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

author = "Ning Li and Ruixue Zhu and Xiaoxing Cheng and Liu, \{Heng Jui\} and Zhangyuan Zhang and Huang, \{Yen Lin\} and Chu, \{Ying Hao\} and Chen, \{Long Qing\} and Yuichi Ikuhara and Peng Gao",

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language = "English (US)",

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journal = "Scripta Materialia",

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TY - JOUR

T1 - Dislocation-induced large local polarization inhomogeneity of ferroelectric materials

AU - Li, Ning

AU - Zhu, Ruixue

AU - Cheng, Xiaoxing

AU - Liu, Heng Jui

AU - Zhang, Zhangyuan

AU - Huang, Yen Lin

AU - Chu, Ying Hao

AU - Chen, Long Qing

AU - Ikuhara, Yuichi

AU - Gao, Peng

PY - 2021/3/15

Y1 - 2021/3/15

N2 - 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.

AB - 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.

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DO - 10.1016/j.scriptamat.2020.11.009

M3 - Article

AN - SCOPUS:85096864966

SN - 1359-6462

VL - 194

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 113624

ER -

Dislocation-induced large local polarization inhomogeneity of ferroelectric materials

Abstract

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