Decomposition of the five-fold surface of Al70Pd21Mn9 at elevated temperature

J. Ledieu; C. A. Muryn; G. Thornton; G. Cappello; J. Chevrier; R. D. Diehl; T. A. Lograsso; D. Delaney; R. McGrath

doi:10.1016/S0921-5093(00)01040-6

Decomposition of the five-fold surface of Al₇₀Pd₂₁Mn₉ at elevated temperature

J. Ledieu^*, C. A. Muryn, G. Thornton, G. Cappello, J. Chevrier, R. D. Diehl, T. A. Lograsso, D. Delaney, R. McGrath

^*Corresponding author for this work

The University of Manchester

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

Abstract

Several surface phases have previously been identified on the five-fold surface of the Al₇₀Pd₂₁Mn₉ quasicrystal. Two of these, the clustered and terraced phases, have been discovered by scanning tunnelling microscopy (STM) studies. In this paper, we report STM images showing the existence of a new phase on this surface. This new topography was obtained by annealing the sample close to its melting point for several minutes. A model is presented which exhibits the main features of the structure. The unit-cell dimensions match those of the Al₃Mn orthorhombic phase. Mechanical polishing followed by sputtering and annealing restored a pentagonal quasicrystalline surface indicating that the decomposition is a near-surface phenomenon.

Original language	English
Pages (from-to)	871-873
Number of pages	3
Journal	Materials Science and Engineering A
Volume	294-296
DOIs	https://doi.org/10.1016/S0921-5093(00)01040-6
Publication status	Published - 15 Dec 2000

Keywords

Quasicrystals
Surface
Al70Pd21Mn9
STM
Al3Mn

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10.1016/S0921-5093(00)01040-6

Cite this

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title = "Decomposition of the five-fold surface of Al70Pd21Mn9 at elevated temperature",

abstract = "Several surface phases have previously been identified on the five-fold surface of the Al70Pd21Mn9 quasicrystal. Two of these, the clustered and terraced phases, have been discovered by scanning tunnelling microscopy (STM) studies. In this paper, we report STM images showing the existence of a new phase on this surface. This new topography was obtained by annealing the sample close to its melting point for several minutes. A model is presented which exhibits the main features of the structure. The unit-cell dimensions match those of the Al3Mn orthorhombic phase. Mechanical polishing followed by sputtering and annealing restored a pentagonal quasicrystalline surface indicating that the decomposition is a near-surface phenomenon.",

keywords = "Quasicrystals, Surface, Al70Pd21Mn9, STM, Al3Mn",

author = "J. Ledieu and Muryn, {C. A.} and G. Thornton and G. Cappello and J. Chevrier and Diehl, {R. D.} and Lograsso, {T. A.} and D. Delaney and R. McGrath",

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doi = "10.1016/S0921-5093(00)01040-6",

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TY - JOUR

T1 - Decomposition of the five-fold surface of Al70Pd21Mn9 at elevated temperature

AU - Ledieu, J.

AU - Muryn, C. A.

AU - Thornton, G.

AU - Cappello, G.

AU - Chevrier, J.

AU - Diehl, R. D.

AU - Lograsso, T. A.

AU - Delaney, D.

AU - McGrath, R.

PY - 2000/12/15

Y1 - 2000/12/15

N2 - Several surface phases have previously been identified on the five-fold surface of the Al70Pd21Mn9 quasicrystal. Two of these, the clustered and terraced phases, have been discovered by scanning tunnelling microscopy (STM) studies. In this paper, we report STM images showing the existence of a new phase on this surface. This new topography was obtained by annealing the sample close to its melting point for several minutes. A model is presented which exhibits the main features of the structure. The unit-cell dimensions match those of the Al3Mn orthorhombic phase. Mechanical polishing followed by sputtering and annealing restored a pentagonal quasicrystalline surface indicating that the decomposition is a near-surface phenomenon.

AB - Several surface phases have previously been identified on the five-fold surface of the Al70Pd21Mn9 quasicrystal. Two of these, the clustered and terraced phases, have been discovered by scanning tunnelling microscopy (STM) studies. In this paper, we report STM images showing the existence of a new phase on this surface. This new topography was obtained by annealing the sample close to its melting point for several minutes. A model is presented which exhibits the main features of the structure. The unit-cell dimensions match those of the Al3Mn orthorhombic phase. Mechanical polishing followed by sputtering and annealing restored a pentagonal quasicrystalline surface indicating that the decomposition is a near-surface phenomenon.

KW - Quasicrystals

KW - Surface

KW - Al70Pd21Mn9

KW - STM

KW - Al3Mn

UR - http://www.scopus.com/inward/record.url?scp=0034497469&partnerID=8YFLogxK

U2 - 10.1016/S0921-5093(00)01040-6

DO - 10.1016/S0921-5093(00)01040-6

M3 - Article

AN - SCOPUS:0034497469

SN - 0921-5093

VL - 294-296

SP - 871

EP - 873

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

ER -

Decomposition of the five-fold surface of Al₇₀Pd₂₁Mn₉ at elevated temperature

Abstract

Keywords

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