The influence of Cu-Nb interfaces on local vacancy concentrations in Cu

Shimin Mao; Shen Dillon; Robert S. Averback

doi:10.1016/j.scriptamat.2013.03.019

The influence of Cu-Nb interfaces on local vacancy concentrations in Cu

Shimin Mao, Shen Dillon, Robert S. Averback

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

Abstract

The sink strength of Cu-Nb interfaces was investigated by measuring the steady-state vacancy concentration profile adjacent to Cu-Nb interfaces during 1.8 MeV Kr⁺ irradiation. Broadening of dilute nanoscale Au tracer layers in Cu quantified position-dependent values for radiation-enhanced diffusivity and, accordingly, vacancy concentration. The measured vacancy profile corresponds to results calculated from a steady-state kinetic rate equation that assumes perfect sink efficiency at the Cu-Nb interface, indicating that it behaves like an ideal sink for vacancies in Cu.

Original language	English (US)
Pages (from-to)	21-24
Number of pages	4
Journal	Scripta Materialia
Volume	69
Issue number	1
DOIs	https://doi.org/10.1016/j.scriptamat.2013.03.019
State	Published - Jul 2013

Keywords

Diffusion
Interfaces
Point defects
Vacancies

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

Online availability

10.1016/j.scriptamat.2013.03.019

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title = "The influence of Cu-Nb interfaces on local vacancy concentrations in Cu",

abstract = "The sink strength of Cu-Nb interfaces was investigated by measuring the steady-state vacancy concentration profile adjacent to Cu-Nb interfaces during 1.8 MeV Kr+ irradiation. Broadening of dilute nanoscale Au tracer layers in Cu quantified position-dependent values for radiation-enhanced diffusivity and, accordingly, vacancy concentration. The measured vacancy profile corresponds to results calculated from a steady-state kinetic rate equation that assumes perfect sink efficiency at the Cu-Nb interface, indicating that it behaves like an ideal sink for vacancies in Cu.",

keywords = "Diffusion, Interfaces, Point defects, Vacancies",

author = "Shimin Mao and Shen Dillon and Averback, {Robert S.}",

note = "Funding Information: This research was supported by the US DOE-BES under Grant DEFG02-05ER46217 . It was carried out, in part, in the Frederick Seitz Materials Research Laboratory Central Facilities, University of Illinois. Discussions with Dr. P. Bellon are gratefully acknowledged.",

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T1 - The influence of Cu-Nb interfaces on local vacancy concentrations in Cu

AU - Mao, Shimin

AU - Dillon, Shen

AU - Averback, Robert S.

N1 - Funding Information: This research was supported by the US DOE-BES under Grant DEFG02-05ER46217 . It was carried out, in part, in the Frederick Seitz Materials Research Laboratory Central Facilities, University of Illinois. Discussions with Dr. P. Bellon are gratefully acknowledged.

PY - 2013/7

Y1 - 2013/7

N2 - The sink strength of Cu-Nb interfaces was investigated by measuring the steady-state vacancy concentration profile adjacent to Cu-Nb interfaces during 1.8 MeV Kr+ irradiation. Broadening of dilute nanoscale Au tracer layers in Cu quantified position-dependent values for radiation-enhanced diffusivity and, accordingly, vacancy concentration. The measured vacancy profile corresponds to results calculated from a steady-state kinetic rate equation that assumes perfect sink efficiency at the Cu-Nb interface, indicating that it behaves like an ideal sink for vacancies in Cu.

AB - The sink strength of Cu-Nb interfaces was investigated by measuring the steady-state vacancy concentration profile adjacent to Cu-Nb interfaces during 1.8 MeV Kr+ irradiation. Broadening of dilute nanoscale Au tracer layers in Cu quantified position-dependent values for radiation-enhanced diffusivity and, accordingly, vacancy concentration. The measured vacancy profile corresponds to results calculated from a steady-state kinetic rate equation that assumes perfect sink efficiency at the Cu-Nb interface, indicating that it behaves like an ideal sink for vacancies in Cu.

KW - Diffusion

KW - Interfaces

KW - Point defects

KW - Vacancies

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The influence of Cu-Nb interfaces on local vacancy concentrations in Cu

Abstract

Keywords

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