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

Miryam Arredondo-Arechavala; Q.M. Ramasse; M. Weyland; R. Mahjoub; I. Vrejoiu; D. Hesse; N.D. Browning; M. Alexe; P. Munroe; V. Nagarajan

doi:10.1002/adma.200903631

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

Miryam Arredondo-Arechavala, Q.M. Ramasse, M. Weyland, R. Mahjoub, I. Vrejoiu, D. Hesse, N.D. Browning, M. Alexe, P. Munroe, V. Nagarajan

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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.

Original language	English
Pages (from-to)	2430- 2434
Number of pages	5
Journal	Advanced Materials
Volume	22
Issue number	22
Early online date	29 Apr 2010
DOIs	https://doi.org/10.1002/adma.200903631
Publication status	Published - 11 Jun 2010

Bibliographical note

The authors would like to thank CONACYT Mexico, ARC DP 0666231, Office of Science, Office of Basic Energy Sciences of the US Department of Energy through grant number DE-FG02-03ER46057 and DE-AC02-05CH11231, the German Science Foundation (DFG) via SFB 762 and DEST International Linkage Grant for their support on this project.

ASJC Scopus subject areas

Mechanical Engineering
Mechanics of Materials
General Materials Science

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title = "Direct evidence for cation non-stoichiometry and Cottrell atmospheres around dislocation cores in functional oxide interfaces",

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-Arechavala and Q.M. Ramasse and M. Weyland and R. Mahjoub and I. Vrejoiu and D. Hesse and N.D. Browning and M. Alexe and P. Munroe and V. Nagarajan",

note = "The authors would like to thank CONACYT Mexico, ARC DP 0666231, Office of Science, Office of Basic Energy Sciences of the US Department of Energy through grant number DE-FG02-03ER46057 and DE-AC02-05CH11231, the German Science Foundation (DFG) via SFB 762 and DEST International Linkage Grant for their support on this project. ",

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doi = "10.1002/adma.200903631",

language = "English",

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T1 - Direct evidence for cation non-stoichiometry and Cottrell atmospheres around dislocation cores in functional oxide interfaces

AU - Arredondo-Arechavala, Miryam

AU - Ramasse, Q.M.

AU - Weyland, M.

AU - Mahjoub, R.

AU - Vrejoiu, I.

AU - Hesse, D.

AU - Browning, N.D.

AU - Alexe, M.

AU - Munroe, P.

AU - Nagarajan, V.

N1 - The authors would like to thank CONACYT Mexico, ARC DP 0666231, Office of Science, Office of Basic Energy Sciences of the US Department of Energy through grant number DE-FG02-03ER46057 and DE-AC02-05CH11231, the German Science Foundation (DFG) via SFB 762 and DEST International Linkage Grant for their support on this project.

PY - 2010/6/11

Y1 - 2010/6/11

N2 - 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.

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.

U2 - 10.1002/adma.200903631

DO - 10.1002/adma.200903631

M3 - Article

SN - 1521-4095

VL - 22

SP - 2430

EP - 2434

JO - Advanced Materials

JF - Advanced Materials

IS - 22

ER -

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

Abstract

Bibliographical note

ASJC Scopus subject areas

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