Electrostatic coupling and local structural distortions at interfaces in ferroelectric/paraelectric superlattices

P. Zubko; N. Jecklin; A. Torres-Pardo; P. Aguado-Puente; A. Gloter; C. Lichtensteiger; J. Junquera; O. Stéphan; J. M. Triscone

doi:10.1021/nl3003717

Electrostatic coupling and local structural distortions at interfaces in ferroelectric/paraelectric superlattices

P. Zubko^*, N. Jecklin, A. Torres-Pardo, P. Aguado-Puente, A. Gloter, C. Lichtensteiger, J. Junquera, O. Stéphan, J. M. Triscone

^*Corresponding author for this work

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

113 Citations (Scopus)

Abstract

The performance of ferroelectric devices is intimately entwined with the structure and dynamics of ferroelectric domains. In ultrathin ferroelectrics, ordered nanodomains arise naturally in response to the presence of a depolarizing field and give rise to highly inhomogeneous polarization and structural profiles. Ferroelectric superlattices offer a unique way of engineering the desired nanodomain structure by modifying the strength of the electrostatic interactions between different ferroelectric layers. Through a combination of X-ray diffraction, transmission electron microscopy, and first-principles calculations, the electrostatic coupling between ferroelectric layers is studied, revealing the existence of interfacial layers of reduced tetragonality attributed to inhomogeneous strain and polarization profiles associated with the domain structure.

Original language	English
Pages (from-to)	2846-2851
Number of pages	6
Journal	Nano Letters
Volume	12
Issue number	6
DOIs	https://doi.org/10.1021/nl3003717
Publication status	Published - 13 Jun 2012
Externally published	Yes

Keywords

electron energy loss spectroscopy
electrostatic coupling
Ferroelectric domains
oxide superlattices

ASJC Scopus subject areas

Condensed Matter Physics
Bioengineering
General Chemistry
General Materials Science
Mechanical Engineering

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10.1021/nl3003717

Cite this

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title = "Electrostatic coupling and local structural distortions at interfaces in ferroelectric/paraelectric superlattices",

abstract = "The performance of ferroelectric devices is intimately entwined with the structure and dynamics of ferroelectric domains. In ultrathin ferroelectrics, ordered nanodomains arise naturally in response to the presence of a depolarizing field and give rise to highly inhomogeneous polarization and structural profiles. Ferroelectric superlattices offer a unique way of engineering the desired nanodomain structure by modifying the strength of the electrostatic interactions between different ferroelectric layers. Through a combination of X-ray diffraction, transmission electron microscopy, and first-principles calculations, the electrostatic coupling between ferroelectric layers is studied, revealing the existence of interfacial layers of reduced tetragonality attributed to inhomogeneous strain and polarization profiles associated with the domain structure.",

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author = "P. Zubko and N. Jecklin and A. Torres-Pardo and P. Aguado-Puente and A. Gloter and C. Lichtensteiger and J. Junquera and O. St{\'e}phan and Triscone, {J. M.}",

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T1 - Electrostatic coupling and local structural distortions at interfaces in ferroelectric/paraelectric superlattices

AU - Zubko, P.

AU - Jecklin, N.

AU - Torres-Pardo, A.

AU - Aguado-Puente, P.

AU - Gloter, A.

AU - Lichtensteiger, C.

AU - Junquera, J.

AU - Stéphan, O.

AU - Triscone, J. M.

PY - 2012/6/13

Y1 - 2012/6/13

N2 - The performance of ferroelectric devices is intimately entwined with the structure and dynamics of ferroelectric domains. In ultrathin ferroelectrics, ordered nanodomains arise naturally in response to the presence of a depolarizing field and give rise to highly inhomogeneous polarization and structural profiles. Ferroelectric superlattices offer a unique way of engineering the desired nanodomain structure by modifying the strength of the electrostatic interactions between different ferroelectric layers. Through a combination of X-ray diffraction, transmission electron microscopy, and first-principles calculations, the electrostatic coupling between ferroelectric layers is studied, revealing the existence of interfacial layers of reduced tetragonality attributed to inhomogeneous strain and polarization profiles associated with the domain structure.

AB - The performance of ferroelectric devices is intimately entwined with the structure and dynamics of ferroelectric domains. In ultrathin ferroelectrics, ordered nanodomains arise naturally in response to the presence of a depolarizing field and give rise to highly inhomogeneous polarization and structural profiles. Ferroelectric superlattices offer a unique way of engineering the desired nanodomain structure by modifying the strength of the electrostatic interactions between different ferroelectric layers. Through a combination of X-ray diffraction, transmission electron microscopy, and first-principles calculations, the electrostatic coupling between ferroelectric layers is studied, revealing the existence of interfacial layers of reduced tetragonality attributed to inhomogeneous strain and polarization profiles associated with the domain structure.

KW - electron energy loss spectroscopy

KW - electrostatic coupling

KW - Ferroelectric domains

KW - oxide superlattices

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DO - 10.1021/nl3003717

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JO - Nano Letters

JF - Nano Letters

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Electrostatic coupling and local structural distortions at interfaces in ferroelectric/paraelectric superlattices

Abstract

Keywords

ASJC Scopus subject areas

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