Atomic clusters in decagonal Al–Cr–Fe: hexagon, star and decagon

R. T. Li; C. B. Boothroyd; K. A. Khor; Z. L. Dong

doi:10.1016/j.matlet.2018.09.002

Atomic clusters in decagonal Al–Cr–Fe: hexagon, star and decagon

R. T. Li, C. B. Boothroyd, K. A. Khor^*, Z. L. Dong

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

In this study, the atomic arrangement of the decagonal phase in a spark-plasma-sintered Al–Cr–Fe alloy has been studied by Cs-corrected high angle annular dark field scanning transmission electron microscopy (HAADF STEM) for the first time. We have found that three types of atomic clusters exist as basic structural units: star, flattened hexagon and decagon with an edge-length of 0.65 nm. These three types of units are linked to each other by sharing edges or inter-penetrating, with adjacent star clusters overlapping each other. The respective structural models of these structural units are proposed from the HAADF STEM images.

Original language	English
Pages (from-to)	254-257
Number of pages	4
Journal	Materials Letters
Volume	233
DOIs	https://doi.org/10.1016/j.matlet.2018.09.002
Publication status	Published - Dec 15 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Elsevier B.V.

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

Al–Cr–Fe alloy
Crystal structure
Electron microscopy
HAADF-STEM
Quasicrystal

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10.1016/j.matlet.2018.09.002

Cite this

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title = "Atomic clusters in decagonal Al–Cr–Fe: hexagon, star and decagon",

abstract = "In this study, the atomic arrangement of the decagonal phase in a spark-plasma-sintered Al–Cr–Fe alloy has been studied by Cs-corrected high angle annular dark field scanning transmission electron microscopy (HAADF STEM) for the first time. We have found that three types of atomic clusters exist as basic structural units: star, flattened hexagon and decagon with an edge-length of 0.65 nm. These three types of units are linked to each other by sharing edges or inter-penetrating, with adjacent star clusters overlapping each other. The respective structural models of these structural units are proposed from the HAADF STEM images.",

keywords = "Al–Cr–Fe alloy, Crystal structure, Electron microscopy, HAADF-STEM, Quasicrystal",

author = "Li, {R. T.} and Boothroyd, {C. B.} and Khor, {K. A.} and Dong, {Z. L.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = dec,

day = "15",

doi = "10.1016/j.matlet.2018.09.002",

language = "English",

volume = "233",

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TY - JOUR

T1 - Atomic clusters in decagonal Al–Cr–Fe

T2 - hexagon, star and decagon

AU - Li, R. T.

AU - Boothroyd, C. B.

AU - Khor, K. A.

AU - Dong, Z. L.

PY - 2018/12/15

Y1 - 2018/12/15

N2 - In this study, the atomic arrangement of the decagonal phase in a spark-plasma-sintered Al–Cr–Fe alloy has been studied by Cs-corrected high angle annular dark field scanning transmission electron microscopy (HAADF STEM) for the first time. We have found that three types of atomic clusters exist as basic structural units: star, flattened hexagon and decagon with an edge-length of 0.65 nm. These three types of units are linked to each other by sharing edges or inter-penetrating, with adjacent star clusters overlapping each other. The respective structural models of these structural units are proposed from the HAADF STEM images.

AB - In this study, the atomic arrangement of the decagonal phase in a spark-plasma-sintered Al–Cr–Fe alloy has been studied by Cs-corrected high angle annular dark field scanning transmission electron microscopy (HAADF STEM) for the first time. We have found that three types of atomic clusters exist as basic structural units: star, flattened hexagon and decagon with an edge-length of 0.65 nm. These three types of units are linked to each other by sharing edges or inter-penetrating, with adjacent star clusters overlapping each other. The respective structural models of these structural units are proposed from the HAADF STEM images.

KW - Al–Cr–Fe alloy

KW - Crystal structure

KW - Electron microscopy

KW - HAADF-STEM

KW - Quasicrystal

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DO - 10.1016/j.matlet.2018.09.002

M3 - Article

AN - SCOPUS:85053041400

SN - 0167-577X

VL - 233

SP - 254

EP - 257

JO - Materials Letters

JF - Materials Letters

ER -

Atomic clusters in decagonal Al–Cr–Fe: hexagon, star and decagon

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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