Reference : Ripple topography and roughness evolution on surface of polycrystalline gold and silv...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
http://hdl.handle.net/2268/117417
Ripple topography and roughness evolution on surface of polycrystalline gold and silver thin films under low energy Ar-ion beam sputtering
English
Gailly, Patrick mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Petermann, Claire mailto [ > > ]
Tihon, Pierre mailto [ > > ]
Fleury-Frenette, Karl mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
2012
Applied Surface Science
Elsevier Science
258
7717-7725
Yes (verified by ORBi)
International
0169-4332
Amsterdam
The Netherlands
[en] sputtering ; ripples ; roughness ; topography ; metallic thin films ; ion beam figuring
[en] Metallic thin films of gold and silver have been sputtered by argon ions at low energy in the framework of technological applications including nanostructuring and ion beam figuring. Ion beam sputtering at high angle of incidence usually leads to spontaneous formation of periodic structures on the target surface, commonly referred as ripples. In this work, ripples dimensions and roughness evolution have been studied as function of the angle of incidence (0–80°), ion beam energy (400 – 1200 eV) and ion flux. The ripple wave vector direction was always observed perpendicular to the ion beam direction for both materials, in agreement with theoretical predictions for the investigated experimental conditions. The decrease of ripple wavelength with energy and ion flux shows the dominance of thermal diffusion as smoothing mechanism. Moreover, three regimes for roughness evolution on gold and silver films have been observed as function of the angle of incidence for sputtering at 650 eV, with a minimum roughness achieved around 45° and 60° for gold and silver, respectively.
Centre Spatial de Liège - CSL
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/117417
10.1016/j.apsusc.2012.04.129

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