Piezoelectricity and electrostriction in ferroelastic materials with polar twin boundaries and domain junctions

Guangming Lu; Suzhi Li; Xiangdong Ding; Ekhard K.H. Salje

doi:10.1063/1.5092523

Piezoelectricity and electrostriction in ferroelastic materials with polar twin boundaries and domain junctions

Guangming Lu
, Suzhi Li
, Xiangdong Ding
, Ekhard K.H. Salje

材料科学与工程学院

Xi'an Jiaotong University
University of Cambridge

科研成果: 期刊稿件 › 文章 › 同行评审

31 引用（Scopus）

摘要

Weak piezoelectricity, compared with electrostriction, occurs in twinned ferroelastic materials even when the uniform bulk material is centro-symmetric. In a simple computer simulation, polarity is exclusively generated by the flexoelectric effect. Simple twinned structures (parallel twin walls) are electrostrictive and show no piezoelectricity. Complex twinned structures break inversion symmetry by the simultaneous appearance of junctions, kinks, needle domains, etc. Such structures show weak piezoelectricity (d ∼10^-4pm/V) under periodic boundary conditions together with significant electrostriction. The macroscopic piezoelectric response is stronger (d ∼10^-3pm/V) under free boundary conditions due to the effect of relaxing surfaces.

源语言	英语
期刊论文编号	202901
期刊	Applied Physics Letters
卷	114
期	20
DOI	https://doi.org/10.1063/1.5092523
出版状态	已出版 - 20 5月 2019

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abstract = "Weak piezoelectricity, compared with electrostriction, occurs in twinned ferroelastic materials even when the uniform bulk material is centro-symmetric. In a simple computer simulation, polarity is exclusively generated by the flexoelectric effect. Simple twinned structures (parallel twin walls) are electrostrictive and show no piezoelectricity. Complex twinned structures break inversion symmetry by the simultaneous appearance of junctions, kinks, needle domains, etc. Such structures show weak piezoelectricity (d ∼10-4pm/V) under periodic boundary conditions together with significant electrostriction. The macroscopic piezoelectric response is stronger (d ∼10-3pm/V) under free boundary conditions due to the effect of relaxing surfaces.",

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AU - Lu, Guangming

AU - Li, Suzhi

AU - Ding, Xiangdong

AU - Salje, Ekhard K.H.

PY - 2019/5/20

Y1 - 2019/5/20

N2 - Weak piezoelectricity, compared with electrostriction, occurs in twinned ferroelastic materials even when the uniform bulk material is centro-symmetric. In a simple computer simulation, polarity is exclusively generated by the flexoelectric effect. Simple twinned structures (parallel twin walls) are electrostrictive and show no piezoelectricity. Complex twinned structures break inversion symmetry by the simultaneous appearance of junctions, kinks, needle domains, etc. Such structures show weak piezoelectricity (d ∼10-4pm/V) under periodic boundary conditions together with significant electrostriction. The macroscopic piezoelectric response is stronger (d ∼10-3pm/V) under free boundary conditions due to the effect of relaxing surfaces.

AB - Weak piezoelectricity, compared with electrostriction, occurs in twinned ferroelastic materials even when the uniform bulk material is centro-symmetric. In a simple computer simulation, polarity is exclusively generated by the flexoelectric effect. Simple twinned structures (parallel twin walls) are electrostrictive and show no piezoelectricity. Complex twinned structures break inversion symmetry by the simultaneous appearance of junctions, kinks, needle domains, etc. Such structures show weak piezoelectricity (d ∼10-4pm/V) under periodic boundary conditions together with significant electrostriction. The macroscopic piezoelectric response is stronger (d ∼10-3pm/V) under free boundary conditions due to the effect of relaxing surfaces.

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JO - Applied Physics Letters

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Piezoelectricity and electrostriction in ferroelastic materials with polar twin boundaries and domain junctions

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