Diffusion properties and collisional dynamics of Ag adatoms and dimers on Pt(111)

We studied diffusion properties of silver monomers and dimers on the (111) surface of platinum by molecular dynamics simulations. Activation energies calculated from Arrhenius plots of diffusion coefficients up to T = 300 K turn out to be equal to E d,1 = 0.058 eV for the monomer and E d,2 = 0.090 e...

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Bibliographic Details
Published in:Surface science 1992-12, Vol.279 (3), p.L219-L224
Main Authors: Blandin, P., Massobrio, C.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Metals. Metallurgy
Physics
Solid surfaces and solid-solid interfaces
Surface and interface dynamics and vibrations
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Thin film structure and morphology
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Summary:We studied diffusion properties of silver monomers and dimers on the (111) surface of platinum by molecular dynamics simulations. Activation energies calculated from Arrhenius plots of diffusion coefficients up to T = 300 K turn out to be equal to E d,1 = 0.058 eV for the monomer and E d,2 = 0.090 eV for the dimer. Simulations of the impact of Ag 2 on the surface reveal that the dimer has the largest probability of being found stable on the surface when the temperature is in the range 150 < T < 300 K.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(92)90543-F