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Surface Reactivity of the Au-Si-Ho Quasicrystalline 1/1 Approximant

Wilfried Bajoun Mbajoun,Yu-Chin Huang,Girma Hailu Gebresenbut,Cesar Pay Gomez,Vincent Fournee,Julian Ledieu

Israel journal of chemistry/Israel Journal of Chemistry（2023）

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Abstract
The oxidation of the (100) surface of Au-Si-Ho quasicrystalline approximant was studied using low-energy electron diffraction and X-ray photoelectron spectroscopy. The combination of these two techniques provides evidence for a Ho and Si surface segregation induced by O2 adsorption, resulting in the loss of surface long-range order. image
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Key words
Quasicrystals,Approximants,Surface science,Surface reactivity,Surface segregation
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