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Tilt angle control of nanocolumns grown by glancing angle sputtering at variable argon pressures

AuthorsGarcía-Martín, José Miguel ; Álvarez, Rafael ; Romero-Gómez, Pablo ; Cebollada, Alfonso ; Palmero, Alberto
Monte Carlo methods
Nanostructured materials
Sputter deposition
Tilt boundaries
Issue Date25-Oct-2010
PublisherAmerican Institute of Physics
CitationApplied Physics Letters, 97 (2010)
AbstractWe show that the tilt angle of nanostructures obtained by glancing angle sputtering is finely tuned by selecting the adequate argon pressure. At low pressures, a ballistic deposition regime dominates, yielding high directional atoms that form tilted nanocolumns. High pressures lead to a diffusive regime which gives rise to vertical columnar growth. Monte Carlo simulations reproduce the experimental results indicating that the loss of directionality of the sputtered particles in the gas phase, together with the self-shadowing mechanism at the surface, are the main processes responsible for the development of the columns.
Publisher version (URL)http://dx.doi.org/10.1063/1.3506502
Appears in Collections:(IMN-CNM) Artículos
(ICMS) Artículos
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