Structural study of an Al70Ni15Fe15 decagonal quasicrystal using high-angle annular dark-field scanning transmission electron microscopy

Koh Saitoh; Kenji Tsuda; Michiyoshi Tanaka; An Pang Tsai

doi:10.1143/jjap.38.l671

Structural study of an Al₇₀Ni₁₅Fe₁₅ decagonal quasicrystal using high-angle annular dark-field scanning transmission electron microscopy

Koh Saitoh, Kenji Tsuda, Michiyoshi Tanaka, An Pang Tsai

Advanced Interdisciplinary Research Division

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

18 Citations (Scopus)

Abstract

High-angle annular dark-field (HAADF) images of a melt-quenched A1₇₀Ni₁₅Fe₁₅ decagonal quasicrystal have been taken using a scanning transmission electron microscope for the first time. We have found that the alloy is composed of 2-nm-diameter atom clusters with fivefold symmetry. We have also observed an inversion domain structure. A structural model has been constructed on the basis of the HAADF images and the fivefold cluster of the monoclinic τ²-Al₁₃Co₄ approximant model. Antiphase shifts at domain boundaries have been observed directly for the first time. The present observation has verified the results of high-resolution electron microscopy (HREM) and the dark-field imaging technique obtained by Tsuda et al.

Original language	English
Pages (from-to)	L671-L674
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	38
Issue number	6 A/B
DOIs	https://doi.org/10.1143/jjap.38.l671
Publication status	Published - 1999 Jun 15

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/jjap.38.l671

Cite this

@article{3ad486a4b67d418884110a005359a69e,

title = "Structural study of an Al70Ni15Fe15 decagonal quasicrystal using high-angle annular dark-field scanning transmission electron microscopy",

abstract = "High-angle annular dark-field (HAADF) images of a melt-quenched A170Ni15Fe15 decagonal quasicrystal have been taken using a scanning transmission electron microscope for the first time. We have found that the alloy is composed of 2-nm-diameter atom clusters with fivefold symmetry. We have also observed an inversion domain structure. A structural model has been constructed on the basis of the HAADF images and the fivefold cluster of the monoclinic τ2-Al13Co4 approximant model. Antiphase shifts at domain boundaries have been observed directly for the first time. The present observation has verified the results of high-resolution electron microscopy (HREM) and the dark-field imaging technique obtained by Tsuda et al.",

author = "Koh Saitoh and Kenji Tsuda and Michiyoshi Tanaka and Tsai, {An Pang}",

year = "1999",

month = jun,

day = "15",

doi = "10.1143/jjap.38.l671",

language = "English",

volume = "38",

pages = "L671--L674",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "6 A/B",

}

TY - JOUR

T1 - Structural study of an Al70Ni15Fe15 decagonal quasicrystal using high-angle annular dark-field scanning transmission electron microscopy

AU - Saitoh, Koh

AU - Tsuda, Kenji

AU - Tanaka, Michiyoshi

AU - Tsai, An Pang

PY - 1999/6/15

Y1 - 1999/6/15

N2 - High-angle annular dark-field (HAADF) images of a melt-quenched A170Ni15Fe15 decagonal quasicrystal have been taken using a scanning transmission electron microscope for the first time. We have found that the alloy is composed of 2-nm-diameter atom clusters with fivefold symmetry. We have also observed an inversion domain structure. A structural model has been constructed on the basis of the HAADF images and the fivefold cluster of the monoclinic τ2-Al13Co4 approximant model. Antiphase shifts at domain boundaries have been observed directly for the first time. The present observation has verified the results of high-resolution electron microscopy (HREM) and the dark-field imaging technique obtained by Tsuda et al.

AB - High-angle annular dark-field (HAADF) images of a melt-quenched A170Ni15Fe15 decagonal quasicrystal have been taken using a scanning transmission electron microscope for the first time. We have found that the alloy is composed of 2-nm-diameter atom clusters with fivefold symmetry. We have also observed an inversion domain structure. A structural model has been constructed on the basis of the HAADF images and the fivefold cluster of the monoclinic τ2-Al13Co4 approximant model. Antiphase shifts at domain boundaries have been observed directly for the first time. The present observation has verified the results of high-resolution electron microscopy (HREM) and the dark-field imaging technique obtained by Tsuda et al.

UR - http://www.scopus.com/inward/record.url?scp=0032666386&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032666386&partnerID=8YFLogxK

U2 - 10.1143/jjap.38.l671

DO - 10.1143/jjap.38.l671

M3 - Article

AN - SCOPUS:0032666386

SN - 0021-4922

VL - 38

SP - L671-L674

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

IS - 6 A/B

ER -

Structural study of an Al₇₀Ni₁₅Fe₁₅ decagonal quasicrystal using high-angle annular dark-field scanning transmission electron microscopy

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this