Structural and magnetic evolution of bimetallic MnAu clusters driven by asymmetric atomic migration

Xiaohui Wei; Rulong Zhou; Williams Lefebvre; Kai He; Damien Le Roy; Ralph Skomski; Xingzhong Li; Jeffrey E. Shield; Matthew J. Kramer; Shuang Chen; Xiao Cheng Zeng; David J. Sellmyer

doi:10.1021/nl404412w

Structural and magnetic evolution of bimetallic MnAu clusters driven by asymmetric atomic migration

Xiaohui Wei, Rulong Zhou, Williams Lefebvre, Kai He, Damien Le Roy, Ralph Skomski, Xingzhong Li, Jeffrey E. Shield, Matthew J. Kramer, Shuang Chen, Xiao Cheng Zeng, David J. Sellmyer

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

20 Citations (Scopus)

Abstract

The nanoscale structural, compositional, and magnetic properties are examined for annealed MnAu nanoclusters. The MnAu clusters order into the L1₀ structure, and monotonic size-dependences develop for the composition and lattice parameters, which are well reproduced by our density functional theory calculations. Simultaneously, Mn diffusion forms 5 Å nanoshells on larger clusters inducing significant magnetization in an otherwise antiferromagnetic system. The differing atomic mobilities yield new cluster nanostructures that can be employed generally to create novel physical properties. © 2014 American Chemical Society.

Original language	English
Pages (from-to)	1362-1368
Journal	Nano Letters
Volume	14
Issue number	3
DOIs	https://doi.org/10.1021/nl404412w
Publication status	Published - 12 Mar 2014
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

annealing
Bimetallic nanoparticles
Ostwald ripening
phase transformation
structure-property correlation
structure/composition/morphology evolution

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title = "Structural and magnetic evolution of bimetallic MnAu clusters driven by asymmetric atomic migration",

abstract = "The nanoscale structural, compositional, and magnetic properties are examined for annealed MnAu nanoclusters. The MnAu clusters order into the L10 structure, and monotonic size-dependences develop for the composition and lattice parameters, which are well reproduced by our density functional theory calculations. Simultaneously, Mn diffusion forms 5 {\AA} nanoshells on larger clusters inducing significant magnetization in an otherwise antiferromagnetic system. The differing atomic mobilities yield new cluster nanostructures that can be employed generally to create novel physical properties. {\textcopyright} 2014 American Chemical Society.",

keywords = "annealing, Bimetallic nanoparticles, Ostwald ripening, phase transformation, structure-property correlation, structure/composition/morphology evolution",

author = "Xiaohui Wei and Rulong Zhou and Williams Lefebvre and Kai He and {Le Roy}, Damien and Ralph Skomski and Xingzhong Li and Shield, {Jeffrey E.} and Kramer, {Matthew J.} and Shuang Chen and Zeng, {Xiao Cheng} and Sellmyer, {David J.}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2014",

month = mar,

day = "12",

doi = "10.1021/nl404412w",

language = "English",

volume = "14",

pages = "1362--1368",

journal = "Nano Letters",

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TY - JOUR

T1 - Structural and magnetic evolution of bimetallic MnAu clusters driven by asymmetric atomic migration

AU - Wei, Xiaohui

AU - Zhou, Rulong

AU - Lefebvre, Williams

AU - He, Kai

AU - Le Roy, Damien

AU - Skomski, Ralph

AU - Li, Xingzhong

AU - Shield, Jeffrey E.

AU - Kramer, Matthew J.

AU - Chen, Shuang

AU - Zeng, Xiao Cheng

AU - Sellmyer, David J.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2014/3/12

Y1 - 2014/3/12

N2 - The nanoscale structural, compositional, and magnetic properties are examined for annealed MnAu nanoclusters. The MnAu clusters order into the L10 structure, and monotonic size-dependences develop for the composition and lattice parameters, which are well reproduced by our density functional theory calculations. Simultaneously, Mn diffusion forms 5 Å nanoshells on larger clusters inducing significant magnetization in an otherwise antiferromagnetic system. The differing atomic mobilities yield new cluster nanostructures that can be employed generally to create novel physical properties. © 2014 American Chemical Society.

AB - The nanoscale structural, compositional, and magnetic properties are examined for annealed MnAu nanoclusters. The MnAu clusters order into the L10 structure, and monotonic size-dependences develop for the composition and lattice parameters, which are well reproduced by our density functional theory calculations. Simultaneously, Mn diffusion forms 5 Å nanoshells on larger clusters inducing significant magnetization in an otherwise antiferromagnetic system. The differing atomic mobilities yield new cluster nanostructures that can be employed generally to create novel physical properties. © 2014 American Chemical Society.

KW - annealing

KW - Bimetallic nanoparticles

KW - Ostwald ripening

KW - phase transformation

KW - structure-property correlation

KW - structure/composition/morphology evolution

UR - http://www.scopus.com/inward/record.url?scp=84896363285&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84896363285&origin=recordpage

U2 - 10.1021/nl404412w

DO - 10.1021/nl404412w

M3 - RGC 21 - Publication in refereed journal

SN - 1530-6984

VL - 14

SP - 1362

EP - 1368

JO - Nano Letters

JF - Nano Letters

IS - 3

ER -

Structural and magnetic evolution of bimetallic MnAu clusters driven by asymmetric atomic migration

Abstract

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Research Keywords

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