Journal Article

PreJuSER-3851

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Effect of a single dislocation in a heterostructure layer on the local polarization of a ferroelectric layer

Jia, C.-L.FZJ* ; Mi, S. B.FZJ* ; Urban, K.FZJ* ; Vrejoiu, I. ; Alexe, M. ; Hesse, D.

2009
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/7197  doi:10.1103/PhysRevLett.102.117601

Abstract: We study, on an atomic scale, the influence of a single dislocation in a SrTiO3 sublayer on the local ferroelectric polarization of the neighboring ferroelectric PbZr0.2Ti0.8O3 (PZT) sublayer in an epitaxial SrTiO3/PbZr0.2Ti0.8O3/SrTiO3 three-layer heterostructure. The strain field of the dislocation in the SrTiO3 layer propagates across the interface into the PZT layer and leads to a strong variation of the c-lattice parameter of the PZT layer. Accompanying a strong reduction of the c-lattice parameter, the off-center displacements of the Zr/Ti atoms away from the center of the oxygen octahedra are also strongly decreased, resulting in a decrease of the local spontaneous polarization by up to 48%.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Mikrostrukturforschung (IFF-8)
2. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2009

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Database coverage:
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