This title appears in the Scientific Report :
2009
Please use the identifier:
http://hdl.handle.net/2128/11011 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.80.014203 in citations.
Structure investigation of the (100) surface of the orthorhombic Al13Co4 crystal
Structure investigation of the (100) surface of the orthorhombic Al13Co4 crystal
We present a detailed study of the (100) surface of the orthorhombic Al13Co4 crystal using both experimental and ab initio computational methods. This complex metallic alloy is an approximant of the decagonal Al-Ni-Co quasicrystalline phase. After sputter-annealing preparation of the surface at 1073...
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Personal Name(s): | Addou, R. |
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Gaudry, E. / Deniozou, T. / Heggen, M. / Feuerbacher, M. / Gille, P. / Groening, O. / Fournee, V. / Dubois, J.M. / Ledieu, J. | |
Contributing Institute: |
Mikrostrukturforschung; IFF-8 |
Published in: | Physical Review B Physical review / B, 80 80 (2009 2009) 1 1, S. 014203 014203 |
Imprint: |
College Park, Md.
APS
2009
|
Physical Description: |
014203 |
DOI: |
10.1103/PhysRevB.80.014203 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Physical Review B
80 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.80.014203 in citations.
We present a detailed study of the (100) surface of the orthorhombic Al13Co4 crystal using both experimental and ab initio computational methods. This complex metallic alloy is an approximant of the decagonal Al-Ni-Co quasicrystalline phase. After sputter-annealing preparation of the surface at 1073 K, the low-energy electron diffraction pattern recorded exhibits a pseudotenfold symmetry with lattice parameters consistent with those of the bulk model. At this stage, scanning tunneling microscopy (STM) measurements reveal two different types of surface terminations. A comparison between these two surface structures and the bulk planes indicate that the terminations correspond either to an incomplete puckered layer (P) or to an incomplete flat layer (F). At 1173 K, the majority of the surface consists of P layer terminations. STM images calculated from our proposed surface model are in good agreement with experimental images. X-ray photoelectron diffraction patterns and single scattering cluster calculations further confirm that the local atomic arrangements present in the bulk model are preserved within the near-surface region. |