Characterization of surface morphologies at the Al-Pd-Mn fivefold surface

Giovanni Cappello; Frank Schmithüsen; Joël Chevrier; Fabio Comin; Andreas Stierle; Vincenzo Formoso; Marc De Boissieu; Michel Boudard; T. A. Lograsso; Cynthia Jenks; Dwigth Delaney

doi:10.1016/S0921-5093(00)01330-7

Characterization of surface morphologies at the Al-Pd-Mn fivefold surface

Giovanni Cappello, Frank Schmithüsen, Joël Chevrier, Fabio Comin, Andreas Stierle, Vincenzo Formoso, Marc De Boissieu, Michel Boudard, T. A. Lograsso, Cynthia Jenks, Dwigth Delaney

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6 Scopus citations

Abstract

Fivefold surfaces of Al-Pd-Mn quasicrystal have been prepared under ultra-high vacuum (UHV) by sputtering and annealing above 700 K and characterized by electron diffraction, Auger spectroscopy and X-ray photoemission spectroscopy (LEED, AES, XPS). X-ray reflectivity at grazing incidence reveals that an in situ temperature annealing at 900 K is necessary to irreversibly produce the signature of a flat and bulk terminated surface. Air-AFM investigations of surfaces prepared below or in the vicinity of this transformation temperature show a large scale structure in the micrometer range with high steps and parallel terraces. Terrace morphology is dominated by clusters with a typical size of about 10 nm. Nanometer steps can coexist with this cluster structure. With UHV-STM, terrace roughness based on cluster assembly is found to extend down to the nanometer scale.

Original language	English
Pages (from-to)	822-825
Number of pages	4
Journal	Materials Science and Engineering: A
Volume	294-296
DOIs	https://doi.org/10.1016/S0921-5093(00)01330-7
State	Published - Dec 15 2000
Externally published	Yes

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title = "Characterization of surface morphologies at the Al-Pd-Mn fivefold surface",

abstract = "Fivefold surfaces of Al-Pd-Mn quasicrystal have been prepared under ultra-high vacuum (UHV) by sputtering and annealing above 700 K and characterized by electron diffraction, Auger spectroscopy and X-ray photoemission spectroscopy (LEED, AES, XPS). X-ray reflectivity at grazing incidence reveals that an in situ temperature annealing at 900 K is necessary to irreversibly produce the signature of a flat and bulk terminated surface. Air-AFM investigations of surfaces prepared below or in the vicinity of this transformation temperature show a large scale structure in the micrometer range with high steps and parallel terraces. Terrace morphology is dominated by clusters with a typical size of about 10 nm. Nanometer steps can coexist with this cluster structure. With UHV-STM, terrace roughness based on cluster assembly is found to extend down to the nanometer scale.",

author = "Giovanni Cappello and Frank Schmith{\"u}sen and Jo{\"e}l Chevrier and Fabio Comin and Andreas Stierle and Vincenzo Formoso and {De Boissieu}, Marc and Michel Boudard and Lograsso, {T. A.} and Cynthia Jenks and Dwigth Delaney",

year = "2000",

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doi = "10.1016/S0921-5093(00)01330-7",

language = "English",

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pages = "822--825",

journal = "Materials Science and Engineering: A",

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TY - JOUR

T1 - Characterization of surface morphologies at the Al-Pd-Mn fivefold surface

AU - Cappello, Giovanni

AU - Schmithüsen, Frank

AU - Chevrier, Joël

AU - Comin, Fabio

AU - Stierle, Andreas

AU - Formoso, Vincenzo

AU - De Boissieu, Marc

AU - Boudard, Michel

AU - Lograsso, T. A.

AU - Jenks, Cynthia

AU - Delaney, Dwigth

PY - 2000/12/15

Y1 - 2000/12/15

N2 - Fivefold surfaces of Al-Pd-Mn quasicrystal have been prepared under ultra-high vacuum (UHV) by sputtering and annealing above 700 K and characterized by electron diffraction, Auger spectroscopy and X-ray photoemission spectroscopy (LEED, AES, XPS). X-ray reflectivity at grazing incidence reveals that an in situ temperature annealing at 900 K is necessary to irreversibly produce the signature of a flat and bulk terminated surface. Air-AFM investigations of surfaces prepared below or in the vicinity of this transformation temperature show a large scale structure in the micrometer range with high steps and parallel terraces. Terrace morphology is dominated by clusters with a typical size of about 10 nm. Nanometer steps can coexist with this cluster structure. With UHV-STM, terrace roughness based on cluster assembly is found to extend down to the nanometer scale.

AB - Fivefold surfaces of Al-Pd-Mn quasicrystal have been prepared under ultra-high vacuum (UHV) by sputtering and annealing above 700 K and characterized by electron diffraction, Auger spectroscopy and X-ray photoemission spectroscopy (LEED, AES, XPS). X-ray reflectivity at grazing incidence reveals that an in situ temperature annealing at 900 K is necessary to irreversibly produce the signature of a flat and bulk terminated surface. Air-AFM investigations of surfaces prepared below or in the vicinity of this transformation temperature show a large scale structure in the micrometer range with high steps and parallel terraces. Terrace morphology is dominated by clusters with a typical size of about 10 nm. Nanometer steps can coexist with this cluster structure. With UHV-STM, terrace roughness based on cluster assembly is found to extend down to the nanometer scale.

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U2 - 10.1016/S0921-5093(00)01330-7

DO - 10.1016/S0921-5093(00)01330-7

M3 - Article

AN - SCOPUS:0041928978

SN - 0921-5093

VL - 294-296

SP - 822

EP - 825

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Characterization of surface morphologies at the Al-Pd-Mn fivefold surface

Abstract

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