Ferroelectricity in ultrathin PbZrO3/PbTiO3 artificial superlattices by scanning probe microscopy

Taekjib Choi; Jin Soo Kim; Bae Park; Hyunjung Shin; Jaichan Lee

doi:10.1080/00150190600697913

Ferroelectricity in ultrathin PbZrO₃/PbTiO₃ artificial superlattices by scanning probe microscopy

Taekjib Choi
, Jin Soo Kim
, Bae Park
, Hyunjung Shin
, Jaichan Lee

Department of Advanced Materials Science and Engineering

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

7 Scopus citations

Abstract

We have studied ferroelectricity in ultrathin (down to 5 nm) PbZrO 3 /PbTiO 3 artificial superlattice by scanning probe microscopy (SPM). Synchrotron x-ray diffraction patterns showed only (00l) reflections. The average c-axis lattice parameters decreased with decreasing film thickness from 20 nm down to 5 nm along with the decrease in piezoresponse signal. By means of piezoresponse images and d 33 hysteresis measurement using piezoresponse force microscope (PFM), we demonstrated that the atomically smooth superlattices showed the uniform polarized domain patterns and ferroelectric polarization switching. The results reveal that the superlattice retains a stable ferroelectricity down to 5 nm thickness, although with a reduced piezoresponse signal.

Original language	English
Pages (from-to)	271-277
Number of pages	7
Journal	Ferroelectrics
Volume	336
DOIs	https://doi.org/10.1080/00150190600697913
State	Published - 1 Jul 2006

Keywords

Artificial lattices
Ferroelectricity
PbZrO/PbTiO
PFM
Size effect
SPM
Ultrathin

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10.1080/00150190600697913

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title = "Ferroelectricity in ultrathin PbZrO3/PbTiO3 artificial superlattices by scanning probe microscopy",

abstract = "We have studied ferroelectricity in ultrathin (down to 5 nm) PbZrO 3 /PbTiO 3 artificial superlattice by scanning probe microscopy (SPM). Synchrotron x-ray diffraction patterns showed only (00l) reflections. The average c-axis lattice parameters decreased with decreasing film thickness from 20 nm down to 5 nm along with the decrease in piezoresponse signal. By means of piezoresponse images and d 33 hysteresis measurement using piezoresponse force microscope (PFM), we demonstrated that the atomically smooth superlattices showed the uniform polarized domain patterns and ferroelectric polarization switching. The results reveal that the superlattice retains a stable ferroelectricity down to 5 nm thickness, although with a reduced piezoresponse signal.",

keywords = "Artificial lattices, Ferroelectricity, PbZrO/PbTiO, PFM, Size effect, SPM, Ultrathin",

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T1 - Ferroelectricity in ultrathin PbZrO3/PbTiO3 artificial superlattices by scanning probe microscopy

AU - Choi, Taekjib

AU - Kim, Jin Soo

AU - Park, Bae

AU - Shin, Hyunjung

AU - Lee, Jaichan

PY - 2006/7/1

Y1 - 2006/7/1

N2 - We have studied ferroelectricity in ultrathin (down to 5 nm) PbZrO 3 /PbTiO 3 artificial superlattice by scanning probe microscopy (SPM). Synchrotron x-ray diffraction patterns showed only (00l) reflections. The average c-axis lattice parameters decreased with decreasing film thickness from 20 nm down to 5 nm along with the decrease in piezoresponse signal. By means of piezoresponse images and d 33 hysteresis measurement using piezoresponse force microscope (PFM), we demonstrated that the atomically smooth superlattices showed the uniform polarized domain patterns and ferroelectric polarization switching. The results reveal that the superlattice retains a stable ferroelectricity down to 5 nm thickness, although with a reduced piezoresponse signal.

AB - We have studied ferroelectricity in ultrathin (down to 5 nm) PbZrO 3 /PbTiO 3 artificial superlattice by scanning probe microscopy (SPM). Synchrotron x-ray diffraction patterns showed only (00l) reflections. The average c-axis lattice parameters decreased with decreasing film thickness from 20 nm down to 5 nm along with the decrease in piezoresponse signal. By means of piezoresponse images and d 33 hysteresis measurement using piezoresponse force microscope (PFM), we demonstrated that the atomically smooth superlattices showed the uniform polarized domain patterns and ferroelectric polarization switching. The results reveal that the superlattice retains a stable ferroelectricity down to 5 nm thickness, although with a reduced piezoresponse signal.

KW - Artificial lattices

KW - Ferroelectricity

KW - PbZrO/PbTiO

KW - PFM

KW - Size effect

KW - SPM

KW - Ultrathin

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DO - 10.1080/00150190600697913

M3 - Article

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SN - 0015-0193

VL - 336

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EP - 277

JO - Ferroelectrics

JF - Ferroelectrics

ER -

Ferroelectricity in ultrathin PbZrO₃/PbTiO₃ artificial superlattices by scanning probe microscopy

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Keywords

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