Influence of the interfacing with an electrically inhomogeneous bottom electrode on the ferroelectric properties of epitaxial PbTiO3

Yunseok Kim; Stephen Jesse; Alessio Morelli; Sergei V. Kalinin; Ionela Vrejoiu

doi:10.1063/1.4828743

Influence of the interfacing with an electrically inhomogeneous bottom electrode on the ferroelectric properties of epitaxial PbTiO₃

Yunseok Kim, Stephen Jesse, Alessio Morelli, Sergei V. Kalinin, Ionela Vrejoiu

Center for Nanophase Matls Sciences

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

3 Scopus citations

Abstract

The influence of an electrically inhomogeneous epitaxial bottom layer on the ferroelectric and electrical properties has been explored in epitaxial PbTiO₃ (PTO)/La_0.7Sr_0.3MnO₃ (LSMO) submicron structures using atomic force microscopy. The submicron LSMO-dot structures underneath the ferroelectric PTO film allow exploring gradual changes in material properties. The LSMO interfacial layer influences significantly both electrical and ferroelectric properties of the upper PTO layer. The obtained results show that the as-grown polarization state of an epitaxial ferroelectric layer is strongly influenced by the properties of the layer on top of which it is deposited.

Original language	English
Article number	192901
Journal	Applied Physics Letters
Volume	103
Issue number	19
DOIs	https://doi.org/10.1063/1.4828743
State	Published - Nov 4 2013

Funding

Research was supported (S.V.K. and Y.K.) by the U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division. A portion of this research was conducted as user project at the Center for Nanophase Materials Sciences (S.J.), which is sponsored at Oak Ridge National Laboratory by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. I.V. and A.M. thank the German Science Foundation (DFG) for financial support via SFB762.

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abstract = "The influence of an electrically inhomogeneous epitaxial bottom layer on the ferroelectric and electrical properties has been explored in epitaxial PbTiO3 (PTO)/La0.7Sr0.3MnO3 (LSMO) submicron structures using atomic force microscopy. The submicron LSMO-dot structures underneath the ferroelectric PTO film allow exploring gradual changes in material properties. The LSMO interfacial layer influences significantly both electrical and ferroelectric properties of the upper PTO layer. The obtained results show that the as-grown polarization state of an epitaxial ferroelectric layer is strongly influenced by the properties of the layer on top of which it is deposited.",

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AU - Vrejoiu, Ionela

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Influence of the interfacing with an electrically inhomogeneous bottom electrode on the ferroelectric properties of epitaxial PbTiO₃

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