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 language | English (US) |
|---|---|
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 69 |
| Issue number | 6 |
| DOIs | |
| State | Published - Feb 27 2004 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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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 journal › Article
TY - JOUR
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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U2 - 10.1103/PhysRevB.69.064113
DO - 10.1103/PhysRevB.69.064113
M3 - Article
AN - SCOPUS:1642364733
VL - 69
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 6
ER -