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

School of Materials Science and Engineering

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

28 Scopus citations

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.

Original language	English
Article number	202901
Journal	Applied Physics Letters
Volume	114
Issue number	20
DOIs	https://doi.org/10.1063/1.5092523
State	Published - 20 May 2019

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title = "Piezoelectricity and electrostriction in ferroelastic materials with polar twin boundaries and domain junctions",

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.",

author = "Guangming Lu and Suzhi Li and Xiangdong Ding and Salje, \{Ekhard K.H.\}",

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T1 - Piezoelectricity and electrostriction in ferroelastic materials with polar twin boundaries and domain junctions

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.

UR - https://www.scopus.com/pages/publications/85065985608

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DO - 10.1063/1.5092523

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SN - 0003-6951

VL - 114

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 20

M1 - 202901

ER -

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

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