Direct evidence for cation non-stoichiometry and cottrell atmospheres around dislocation cores in functional oxide interfaces

Miryam Arredondo, Quentin Ramasse, Matthew Weyland, Reza Mahjoub, Ionela Vrejoiu, Dietrich Hesse, Nigel Browning, Marin Alexe, Paul Munroe, Valanoor Nagarajan

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Long-range strain fields associated with dislocation cores at an oxide interface are shown to be sufficient enough to create significant variations in the chemical composition around the core (Cottrell atmospheres). Such stress-assisted diffusion of cations towards the cores is proposed to significantly impact the properties of nanoscale functional devices. The figure shows a Z-contrast image of a single dislocation core at an oxide interface.
Original languageEnglish
Pages (from-to)2430 - 2434
Number of pages5
JournalAdvanced Materials
Volume22
Issue number22
DOIs
Publication statusPublished - 2010

Cite this

Arredondo, Miryam ; Ramasse, Quentin ; Weyland, Matthew ; Mahjoub, Reza ; Vrejoiu, Ionela ; Hesse, Dietrich ; Browning, Nigel ; Alexe, Marin ; Munroe, Paul ; Nagarajan, Valanoor. / Direct evidence for cation non-stoichiometry and cottrell atmospheres around dislocation cores in functional oxide interfaces. In: Advanced Materials. 2010 ; Vol. 22, No. 22. pp. 2430 - 2434.
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abstract = "Long-range strain fields associated with dislocation cores at an oxide interface are shown to be sufficient enough to create significant variations in the chemical composition around the core (Cottrell atmospheres). Such stress-assisted diffusion of cations towards the cores is proposed to significantly impact the properties of nanoscale functional devices. The figure shows a Z-contrast image of a single dislocation core at an oxide interface.",
author = "Miryam Arredondo and Quentin Ramasse and Matthew Weyland and Reza Mahjoub and Ionela Vrejoiu and Dietrich Hesse and Nigel Browning and Marin Alexe and Paul Munroe and Valanoor Nagarajan",
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Arredondo, M, Ramasse, Q, Weyland, M, Mahjoub, R, Vrejoiu, I, Hesse, D, Browning, N, Alexe, M, Munroe, P & Nagarajan, V 2010, 'Direct evidence for cation non-stoichiometry and cottrell atmospheres around dislocation cores in functional oxide interfaces', Advanced Materials, vol. 22, no. 22, pp. 2430 - 2434. https://doi.org/10.1002/adma.200903631

Direct evidence for cation non-stoichiometry and cottrell atmospheres around dislocation cores in functional oxide interfaces. / Arredondo, Miryam; Ramasse, Quentin; Weyland, Matthew; Mahjoub, Reza; Vrejoiu, Ionela; Hesse, Dietrich; Browning, Nigel; Alexe, Marin; Munroe, Paul; Nagarajan, Valanoor.

In: Advanced Materials, Vol. 22, No. 22, 2010, p. 2430 - 2434.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Arredondo, Miryam

AU - Ramasse, Quentin

AU - Weyland, Matthew

AU - Mahjoub, Reza

AU - Vrejoiu, Ionela

AU - Hesse, Dietrich

AU - Browning, Nigel

AU - Alexe, Marin

AU - Munroe, Paul

AU - Nagarajan, Valanoor

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AB - Long-range strain fields associated with dislocation cores at an oxide interface are shown to be sufficient enough to create significant variations in the chemical composition around the core (Cottrell atmospheres). Such stress-assisted diffusion of cations towards the cores is proposed to significantly impact the properties of nanoscale functional devices. The figure shows a Z-contrast image of a single dislocation core at an oxide interface.

UR - http://www.wiley-vch.de/publish/en/journals/alphabeticIndex/2089

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DO - 10.1002/adma.200903631

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VL - 22

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EP - 2434

JO - Advanced Materials

JF - Advanced Materials

SN - 0935-9648

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