Long-range strains and the effects of applied field at 180° ferroelectric domain walls in lithium niobate

Terrence Jach, Sungwon Kim, Venkatraman Gopalan, Stephen Durbin, David Bright

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Ferroelectric domains with antiparallel polarization are readily induced in congruent LiNbO3 with electric fields above 240 kV/cm at room temperature. Even in the absence of external fields, these 180° walls exhibit wide regions of shear strain, on the order of 10-5, within a 10-μm range of the domain walls. Using x-ray topography on samples while applying electric fields of 0-90 kV/cm, we have observed large-scale reversible domain changes. A detailed strain analysis of the piezoelectric behavior at the domain walls, as well as within the domains, indicates that substantial surface displacement is associated with the high contrast of ferroelectric domains in x-ray topographs. These observations show that long-range strain interactions due to applied fields are present around domain walls long before permanent changes are induced.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number6
DOIs
StatePublished - Feb 27 2004

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Domain walls
lithium niobates
Ferroelectric materials
domain wall
Lithium
Electric fields
X rays
Shear strain
Topography
electric fields
shear strain
Polarization
topography
x rays
lithium niobate
room temperature
polarization
Temperature
interactions

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "Ferroelectric domains with antiparallel polarization are readily induced in congruent LiNbO3 with electric fields above 240 kV/cm at room temperature. Even in the absence of external fields, these 180° walls exhibit wide regions of shear strain, on the order of 10-5, within a 10-μm range of the domain walls. Using x-ray topography on samples while applying electric fields of 0-90 kV/cm, we have observed large-scale reversible domain changes. A detailed strain analysis of the piezoelectric behavior at the domain walls, as well as within the domains, indicates that substantial surface displacement is associated with the high contrast of ferroelectric domains in x-ray topographs. These observations show that long-range strain interactions due to applied fields are present around domain walls long before permanent changes are induced.",
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Long-range strains and the effects of applied field at 180° ferroelectric domain walls in lithium niobate. / Jach, Terrence; Kim, Sungwon; Gopalan, Venkatraman; Durbin, Stephen; Bright, David.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 69, No. 6, 27.02.2004.

Research output: Contribution to journalArticle

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T1 - Long-range strains and the effects of applied field at 180° ferroelectric domain walls in lithium niobate

AU - Jach, Terrence

AU - Kim, Sungwon

AU - Gopalan, Venkatraman

AU - Durbin, Stephen

AU - Bright, David

PY - 2004/2/27

Y1 - 2004/2/27

N2 - Ferroelectric domains with antiparallel polarization are readily induced in congruent LiNbO3 with electric fields above 240 kV/cm at room temperature. Even in the absence of external fields, these 180° walls exhibit wide regions of shear strain, on the order of 10-5, within a 10-μm range of the domain walls. Using x-ray topography on samples while applying electric fields of 0-90 kV/cm, we have observed large-scale reversible domain changes. A detailed strain analysis of the piezoelectric behavior at the domain walls, as well as within the domains, indicates that substantial surface displacement is associated with the high contrast of ferroelectric domains in x-ray topographs. These observations show that long-range strain interactions due to applied fields are present around domain walls long before permanent changes are induced.

AB - Ferroelectric domains with antiparallel polarization are readily induced in congruent LiNbO3 with electric fields above 240 kV/cm at room temperature. Even in the absence of external fields, these 180° walls exhibit wide regions of shear strain, on the order of 10-5, within a 10-μm range of the domain walls. Using x-ray topography on samples while applying electric fields of 0-90 kV/cm, we have observed large-scale reversible domain changes. A detailed strain analysis of the piezoelectric behavior at the domain walls, as well as within the domains, indicates that substantial surface displacement is associated with the high contrast of ferroelectric domains in x-ray topographs. These observations show that long-range strain interactions due to applied fields are present around domain walls long before permanent changes are induced.

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