Unusual behaviour of the ferroelectric polarization in PbTiO3/SrTiO3 superlattices

M. Dawber, C. Lichtensteiger, M. Cantoni, M. Veithen, P. Ghosez, Karen Johnston, K. M. Rabe, J.-M. Triscone

Research output: Contribution to journalArticle

160 Citations (Scopus)

Abstract

Artificial PbTiO3/SrTiO3 superlattices were constructed using off-axis rf magnetron sputtering. X-ray diffraction and piezoelectric atomic force microscopy were used to study the evolution of the ferroelectric polarization as the ratio of PbTiO3 to SrTiO3 was changed. For PbTiO3 layer thicknesses larger than the 3-unit cell SrTiO3 thickness used in the structure, the polarization is found to be reduced as the PbTiO3 thickness is decreased. This observation confirms the primary role of the depolarization field in the polarization reduction in thin films. For the samples with ratios of PbTiO3 to SrTiO3 of less than one, a surprising recovery of ferroelectricity that cannot be explained by electrostatic considerations was observed.
LanguageEnglish
Article number177601
Number of pages4
JournalPhysical Review Letters
Volume95
DOIs
Publication statusPublished - 2005

Fingerprint

Superlattices
Ferroelectric materials
superlattices
Polarization
polarization
Ferroelectricity
ferroelectricity
Depolarization
depolarization
Magnetron sputtering
Electrostatics
Atomic force microscopy
magnetron sputtering
recovery
atomic force microscopy
electrostatics
Recovery
X ray diffraction
Thin films
thin films

Keywords

  • unusual behaviour
  • ferroelectric polarization

Cite this

Dawber, M., Lichtensteiger, C., Cantoni, M., Veithen, M., Ghosez, P., Johnston, K., ... Triscone, J-M. (2005). Unusual behaviour of the ferroelectric polarization in PbTiO3/SrTiO3 superlattices. Physical Review Letters, 95, [177601]. https://doi.org/10.1103/PhysRevLett.95.177601
Dawber, M. ; Lichtensteiger, C. ; Cantoni, M. ; Veithen, M. ; Ghosez, P. ; Johnston, Karen ; Rabe, K. M. ; Triscone, J.-M. / Unusual behaviour of the ferroelectric polarization in PbTiO3/SrTiO3 superlattices. In: Physical Review Letters. 2005 ; Vol. 95.
@article{a102e29fbad74032850ab89d2c958f20,
title = "Unusual behaviour of the ferroelectric polarization in PbTiO3/SrTiO3 superlattices",
abstract = "Artificial PbTiO3/SrTiO3 superlattices were constructed using off-axis rf magnetron sputtering. X-ray diffraction and piezoelectric atomic force microscopy were used to study the evolution of the ferroelectric polarization as the ratio of PbTiO3 to SrTiO3 was changed. For PbTiO3 layer thicknesses larger than the 3-unit cell SrTiO3 thickness used in the structure, the polarization is found to be reduced as the PbTiO3 thickness is decreased. This observation confirms the primary role of the depolarization field in the polarization reduction in thin films. For the samples with ratios of PbTiO3 to SrTiO3 of less than one, a surprising recovery of ferroelectricity that cannot be explained by electrostatic considerations was observed.",
keywords = "unusual behaviour, ferroelectric polarization",
author = "M. Dawber and C. Lichtensteiger and M. Cantoni and M. Veithen and P. Ghosez and Karen Johnston and Rabe, {K. M.} and J.-M. Triscone",
year = "2005",
doi = "10.1103/PhysRevLett.95.177601",
language = "English",
volume = "95",
journal = "Physical Review Letters",
issn = "0031-9007",

}

Dawber, M, Lichtensteiger, C, Cantoni, M, Veithen, M, Ghosez, P, Johnston, K, Rabe, KM & Triscone, J-M 2005, 'Unusual behaviour of the ferroelectric polarization in PbTiO3/SrTiO3 superlattices' Physical Review Letters, vol. 95, 177601. https://doi.org/10.1103/PhysRevLett.95.177601

Unusual behaviour of the ferroelectric polarization in PbTiO3/SrTiO3 superlattices. / Dawber, M. ; Lichtensteiger, C.; Cantoni, M.; Veithen, M.; Ghosez, P.; Johnston, Karen; Rabe, K. M. ; Triscone, J.-M.

In: Physical Review Letters, Vol. 95, 177601, 2005.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Unusual behaviour of the ferroelectric polarization in PbTiO3/SrTiO3 superlattices

AU - Dawber, M.

AU - Lichtensteiger, C.

AU - Cantoni, M.

AU - Veithen, M.

AU - Ghosez, P.

AU - Johnston, Karen

AU - Rabe, K. M.

AU - Triscone, J.-M.

PY - 2005

Y1 - 2005

N2 - Artificial PbTiO3/SrTiO3 superlattices were constructed using off-axis rf magnetron sputtering. X-ray diffraction and piezoelectric atomic force microscopy were used to study the evolution of the ferroelectric polarization as the ratio of PbTiO3 to SrTiO3 was changed. For PbTiO3 layer thicknesses larger than the 3-unit cell SrTiO3 thickness used in the structure, the polarization is found to be reduced as the PbTiO3 thickness is decreased. This observation confirms the primary role of the depolarization field in the polarization reduction in thin films. For the samples with ratios of PbTiO3 to SrTiO3 of less than one, a surprising recovery of ferroelectricity that cannot be explained by electrostatic considerations was observed.

AB - Artificial PbTiO3/SrTiO3 superlattices were constructed using off-axis rf magnetron sputtering. X-ray diffraction and piezoelectric atomic force microscopy were used to study the evolution of the ferroelectric polarization as the ratio of PbTiO3 to SrTiO3 was changed. For PbTiO3 layer thicknesses larger than the 3-unit cell SrTiO3 thickness used in the structure, the polarization is found to be reduced as the PbTiO3 thickness is decreased. This observation confirms the primary role of the depolarization field in the polarization reduction in thin films. For the samples with ratios of PbTiO3 to SrTiO3 of less than one, a surprising recovery of ferroelectricity that cannot be explained by electrostatic considerations was observed.

KW - unusual behaviour

KW - ferroelectric polarization

U2 - 10.1103/PhysRevLett.95.177601

DO - 10.1103/PhysRevLett.95.177601

M3 - Article

VL - 95

JO - Physical Review Letters

T2 - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

M1 - 177601

ER -