Photoemission studies of the sputter-induced phase transformation on the Al-Cu-Fe surface

J. A. Barrow; V. Fournée; A. R. Ross; P. A. Thiel; M. Shimoda; A. P. Tsai

doi:10.1016/S0039-6028(03)00746-5

Photoemission studies of the sputter-induced phase transformation on the Al-Cu-Fe surface

J. A. Barrow, V. Fournée, A. R. Ross, P. A. Thiel, M. Shimoda, A. P. Tsai

研究成果: Article › 査読

14 被引用数 (Scopus)

抄録

The surface of a single grain icosahedral (i) Al-Cu-Fe quasicrystalline sample is studied as a function of annealing temperature using ultra-violet photoemission spectroscopy (UPS). Reflection high-energy electron diffraction and X-ray photoelectron spectroscopy are also performed to verify surface structure and composition. The sputtered surface shows structure and chemical composition consistent with that of β-Al-Cu-Fe cubic phase together with a sharp Fermi cut-off. With increasing annealing temperature, the surface structure and composition reverts to that of the quasicrystal. This transformation is correlated with a decrease of the spectral intensity at the Fermi level (E_F). Analysis of the UPS spectra in the region near E_F is performed by fitting the data with a pseudogap function.

本文言語	English
ページ（範囲）	54-62
ページ数	9
ジャーナル	Surface Science
巻	539
号	1-3
DOI	https://doi.org/10.1016/S0039-6028(03)00746-5
出版ステータス	Published - 2003 8月 1
外部発表	はい

ASJC Scopus subject areas

凝縮系物理学
表面および界面
表面、皮膜および薄膜
材料化学

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10.1016/S0039-6028(03)00746-5

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title = "Photoemission studies of the sputter-induced phase transformation on the Al-Cu-Fe surface",

abstract = "The surface of a single grain icosahedral (i) Al-Cu-Fe quasicrystalline sample is studied as a function of annealing temperature using ultra-violet photoemission spectroscopy (UPS). Reflection high-energy electron diffraction and X-ray photoelectron spectroscopy are also performed to verify surface structure and composition. The sputtered surface shows structure and chemical composition consistent with that of β-Al-Cu-Fe cubic phase together with a sharp Fermi cut-off. With increasing annealing temperature, the surface structure and composition reverts to that of the quasicrystal. This transformation is correlated with a decrease of the spectral intensity at the Fermi level (EF). Analysis of the UPS spectra in the region near EF is performed by fitting the data with a pseudogap function.",

keywords = "Ion etching, Reflection high-energy electron diffraction (RHEED), Sputtering, Surface relaxation and reconstruction, Visible and ultraviolet photoelectron spectroscopy, X-ray photoelectron spectroscopy",

author = "Barrow, {J. A.} and V. Fourn{\'e}e and Ross, {A. R.} and Thiel, {P. A.} and M. Shimoda and Tsai, {A. P.}",

note = "Funding Information: The authors gratefully acknowledge D.W. Lynch for valuable discussions. This manuscript has been authored by Iowa State University of Science and Technology under Contract No. W-7405-ENG-82 with the US Department of Energy. Experiments performed in Japan were supported by JST Solution-Oriented Research for Science and Technology (SORST) and JSPS Grant-in-Aid for Exploratory Research. ",

year = "2003",

month = aug,

day = "1",

doi = "10.1016/S0039-6028(03)00746-5",

language = "English",

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T1 - Photoemission studies of the sputter-induced phase transformation on the Al-Cu-Fe surface

AU - Barrow, J. A.

AU - Fournée, V.

AU - Ross, A. R.

AU - Thiel, P. A.

AU - Shimoda, M.

AU - Tsai, A. P.

N1 - Funding Information: The authors gratefully acknowledge D.W. Lynch for valuable discussions. This manuscript has been authored by Iowa State University of Science and Technology under Contract No. W-7405-ENG-82 with the US Department of Energy. Experiments performed in Japan were supported by JST Solution-Oriented Research for Science and Technology (SORST) and JSPS Grant-in-Aid for Exploratory Research.

PY - 2003/8/1

Y1 - 2003/8/1

N2 - The surface of a single grain icosahedral (i) Al-Cu-Fe quasicrystalline sample is studied as a function of annealing temperature using ultra-violet photoemission spectroscopy (UPS). Reflection high-energy electron diffraction and X-ray photoelectron spectroscopy are also performed to verify surface structure and composition. The sputtered surface shows structure and chemical composition consistent with that of β-Al-Cu-Fe cubic phase together with a sharp Fermi cut-off. With increasing annealing temperature, the surface structure and composition reverts to that of the quasicrystal. This transformation is correlated with a decrease of the spectral intensity at the Fermi level (EF). Analysis of the UPS spectra in the region near EF is performed by fitting the data with a pseudogap function.

AB - The surface of a single grain icosahedral (i) Al-Cu-Fe quasicrystalline sample is studied as a function of annealing temperature using ultra-violet photoemission spectroscopy (UPS). Reflection high-energy electron diffraction and X-ray photoelectron spectroscopy are also performed to verify surface structure and composition. The sputtered surface shows structure and chemical composition consistent with that of β-Al-Cu-Fe cubic phase together with a sharp Fermi cut-off. With increasing annealing temperature, the surface structure and composition reverts to that of the quasicrystal. This transformation is correlated with a decrease of the spectral intensity at the Fermi level (EF). Analysis of the UPS spectra in the region near EF is performed by fitting the data with a pseudogap function.

KW - Ion etching

KW - Reflection high-energy electron diffraction (RHEED)

KW - Sputtering

KW - Surface relaxation and reconstruction

KW - Visible and ultraviolet photoelectron spectroscopy

KW - X-ray photoelectron spectroscopy

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U2 - 10.1016/S0039-6028(03)00746-5

DO - 10.1016/S0039-6028(03)00746-5

M3 - Article

AN - SCOPUS:0041698272

VL - 539

SP - 54

EP - 62

JO - Surface Science

JF - Surface Science

SN - 0039-6028

IS - 1-3

ER -

Photoemission studies of the sputter-induced phase transformation on the Al-Cu-Fe surface

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