Z-contrast STEM imaging of long-range ordered structures in epitaxially grown CoPt nanoparticles

Sato, Kazuhisa; Yanajima, Keigo; Konno, Toyohiko J.

Journal of Nanomaterials, 2013, 2013, 679638

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Identifier to cite or link to this item: https://hdl.handle.net/11094/89417

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Title
Z-contrast STEM imaging of long-range ordered structures in epitaxially grown CoPt nanoparticles
Creator
NRID
1000070314424 1000070314424
ORCID
0000-0001-9078-2541 0000-0001-9078-2541
researchmap permalink
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Scopus Author ID
55552977400 55552977400
CreatorName
Sato, Kazuhisa
CreatorName
Yanajima, Keigo
NRID
1000090260447 1000090260447
CreatorName
Konno, Toyohiko J.
Description
Kazuhisa Sato, Keigo Yanajima and Toyohiko J. Konno, Z-Contrast STEM Imaging of Long-Range Ordered Structures in Epitaxially Grown CoPt Nanoparticles, Journal of Nanomaterials, 2013, 679638.
Abstract
We report on atomic structure imaging of epitaxial L₀CoPt nanoparticles using chemically sensitive high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). Highly ordered nanoparticles formed by annealing at 973 K show single-variant structure with perpendicular c-axis orientation, while multivariant ordered domains are frequently observed for specimens annealed at 873 K. It was found that the (001) facets of the multivariant particles are terminated by Co atoms rather than by Pt, presumably due to the intermediate stage of atomic ordering. Coexistence of single-variant particles and multivariant particles in the same specimen film suggests that the interfacial energy between variant domains be small enough to form such structural domains in a nanoparticle as small as 4 nm in diameter. © 2013 Kazuhisa Sato et al.
Publisher
Hindawi Publishing
Source Title
Journal of Nanomaterials
Volume (Issue)
2013
Page
679638
Date of Issued
2013-06-27
Language
English
Handle URL
https://hdl.handle.net/11094/89417
PISSN
16874110
eISSN
16874129
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1155/2013/679638
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 3.0 Unported License.
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Version of Record
Category
学術雑誌論文 Journal Article