Abstract
The layer structure of Ag on a NiPt (111) surface after high temperature annealing was studied by Auger electron spectroscopy, depth profile of Ar ion sputtering, and low-energy electron diffraction (LEED). A structural phase p (2×2) LEED pattern was observed in one atomic monolayer (ML) on 1 ML NiPt (111) surface after annealing at 800 K. Based on observations of the change of ion sputtering rates for the Ag overlayers, the LEED pattern, and minimum strain energy, we propose a layer structure of Ag for 1 ML Ag/1 ML NiPt (111) after the 800 K annealing. The compositions in the subsurface region are 0.25 ML Ag in p (2×2) structure on the topmost layer, Ag75 Ni25 alloy in the second layer, and Ni-Pt alloy in the remaining layers of the subsurface regions.
| Original language | English |
|---|---|
| Article number | 120604JVA |
| Pages (from-to) | 1020-1023 |
| Number of pages | 4 |
| Journal | Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films |
| Volume | 24 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2006 Jul 1 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
Cite this
Layer structure of ultrathin Ag films on Ni/Pt(111). / Ho, H. Y.; Chen, Y. J.; Su, C. W.; Chen, R. H.; Shern, C. S.
In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, Vol. 24, No. 4, 120604JVA, 01.07.2006, p. 1020-1023.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Layer structure of ultrathin Ag films on Ni/Pt(111)
AU - Ho, H. Y.
AU - Chen, Y. J.
AU - Su, C. W.
AU - Chen, R. H.
AU - Shern, C. S.
PY - 2006/7/1
Y1 - 2006/7/1
N2 - The layer structure of Ag on a NiPt (111) surface after high temperature annealing was studied by Auger electron spectroscopy, depth profile of Ar ion sputtering, and low-energy electron diffraction (LEED). A structural phase p (2×2) LEED pattern was observed in one atomic monolayer (ML) on 1 ML NiPt (111) surface after annealing at 800 K. Based on observations of the change of ion sputtering rates for the Ag overlayers, the LEED pattern, and minimum strain energy, we propose a layer structure of Ag for 1 ML Ag/1 ML NiPt (111) after the 800 K annealing. The compositions in the subsurface region are 0.25 ML Ag in p (2×2) structure on the topmost layer, Ag75 Ni25 alloy in the second layer, and Ni-Pt alloy in the remaining layers of the subsurface regions.
AB - The layer structure of Ag on a NiPt (111) surface after high temperature annealing was studied by Auger electron spectroscopy, depth profile of Ar ion sputtering, and low-energy electron diffraction (LEED). A structural phase p (2×2) LEED pattern was observed in one atomic monolayer (ML) on 1 ML NiPt (111) surface after annealing at 800 K. Based on observations of the change of ion sputtering rates for the Ag overlayers, the LEED pattern, and minimum strain energy, we propose a layer structure of Ag for 1 ML Ag/1 ML NiPt (111) after the 800 K annealing. The compositions in the subsurface region are 0.25 ML Ag in p (2×2) structure on the topmost layer, Ag75 Ni25 alloy in the second layer, and Ni-Pt alloy in the remaining layers of the subsurface regions.
UR - http://www.scopus.com/inward/record.url?scp=33745513291&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33745513291&partnerID=8YFLogxK
U2 - 10.1116/1.2208993
DO - 10.1116/1.2208993
M3 - Article
AN - SCOPUS:33745513291
VL - 24
SP - 1020
EP - 1023
JO - Journal of Vacuum Science and Technology A
JF - Journal of Vacuum Science and Technology A
SN - 0734-2101
IS - 4
M1 - 120604JVA
ER -