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Diffusion processes and growth on aluminum cluster surfaces

Tutkimustuotosvertaisarvioitu

Standard

Diffusion processes and growth on aluminum cluster surfaces. / Valkealahti, S.; Manninen, M.

julkaisussa: Zeitschrift fur Physik D-Atoms Molecules and Clusters, Vuosikerta 40, Nro 1-4, 01.01.1997, s. 496-502.

Tutkimustuotosvertaisarvioitu

Harvard

Valkealahti, S & Manninen, M 1997, 'Diffusion processes and growth on aluminum cluster surfaces', Zeitschrift fur Physik D-Atoms Molecules and Clusters, Vuosikerta. 40, Nro 1-4, Sivut 496-502. https://doi.org/10.1007/s004600050262

APA

Valkealahti, S., & Manninen, M. (1997). Diffusion processes and growth on aluminum cluster surfaces. Zeitschrift fur Physik D-Atoms Molecules and Clusters, 40(1-4), 496-502. https://doi.org/10.1007/s004600050262

Vancouver

Valkealahti S, Manninen M. Diffusion processes and growth on aluminum cluster surfaces. Zeitschrift fur Physik D-Atoms Molecules and Clusters. 1997 tammi 1;40(1-4):496-502. https://doi.org/10.1007/s004600050262

Author

Valkealahti, S. ; Manninen, M. / Diffusion processes and growth on aluminum cluster surfaces. Julkaisussa: Zeitschrift fur Physik D-Atoms Molecules and Clusters. 1997 ; Vuosikerta 40, Nro 1-4. Sivut 496-502.

Bibtex - Lataa

@article{677e8eb375ff4f32a09047f7bbc339ff,
title = "Diffusion processes and growth on aluminum cluster surfaces",
abstract = "Diffusion processes of adatoms on icosahedral and Wulff polyhedral aluminum cluster surfaces have been studied by molecular dynamics simulations using the effective medium theory. Activation energies of diffusion mechanisms along {111} and {100} facets and from one facet to another, including different hopping and exchange processes as well as more exotic events, have been calculated. Exchange diffusion of an adatom by a chain mechanism through a {100} facet between two {111} facets and hopping diffusion across the edge between two {111} facets via a pull of another adatom on the neighbour facet are shown to play an important role. Adatoms on {111} facets are mobile already at very low temperatures, but on {100} facets diffusion starts above the room temperature as well as diffusion from {111} facets to {100} facets. Diffusion from {100} facet to other facets was not observed until at temperatures close to the melting temperatures of clusters. Dynamical simulations at different temperatures confirmed the appearance of diffusion mechanisms predicted by the activation energies.",
author = "S. Valkealahti and M. Manninen",
year = "1997",
month = "1",
day = "1",
doi = "10.1007/s004600050262",
language = "English",
volume = "40",
pages = "496--502",
journal = "Zeitschrift f{\"u}r Physik D Atoms, Molecules and Clusters",
issn = "0178-7683",
publisher = "Springer Verlag",
number = "1-4",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Diffusion processes and growth on aluminum cluster surfaces

AU - Valkealahti, S.

AU - Manninen, M.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Diffusion processes of adatoms on icosahedral and Wulff polyhedral aluminum cluster surfaces have been studied by molecular dynamics simulations using the effective medium theory. Activation energies of diffusion mechanisms along {111} and {100} facets and from one facet to another, including different hopping and exchange processes as well as more exotic events, have been calculated. Exchange diffusion of an adatom by a chain mechanism through a {100} facet between two {111} facets and hopping diffusion across the edge between two {111} facets via a pull of another adatom on the neighbour facet are shown to play an important role. Adatoms on {111} facets are mobile already at very low temperatures, but on {100} facets diffusion starts above the room temperature as well as diffusion from {111} facets to {100} facets. Diffusion from {100} facet to other facets was not observed until at temperatures close to the melting temperatures of clusters. Dynamical simulations at different temperatures confirmed the appearance of diffusion mechanisms predicted by the activation energies.

AB - Diffusion processes of adatoms on icosahedral and Wulff polyhedral aluminum cluster surfaces have been studied by molecular dynamics simulations using the effective medium theory. Activation energies of diffusion mechanisms along {111} and {100} facets and from one facet to another, including different hopping and exchange processes as well as more exotic events, have been calculated. Exchange diffusion of an adatom by a chain mechanism through a {100} facet between two {111} facets and hopping diffusion across the edge between two {111} facets via a pull of another adatom on the neighbour facet are shown to play an important role. Adatoms on {111} facets are mobile already at very low temperatures, but on {100} facets diffusion starts above the room temperature as well as diffusion from {111} facets to {100} facets. Diffusion from {100} facet to other facets was not observed until at temperatures close to the melting temperatures of clusters. Dynamical simulations at different temperatures confirmed the appearance of diffusion mechanisms predicted by the activation energies.

U2 - 10.1007/s004600050262

DO - 10.1007/s004600050262

M3 - Article

VL - 40

SP - 496

EP - 502

JO - Zeitschrift für Physik D Atoms, Molecules and Clusters

JF - Zeitschrift für Physik D Atoms, Molecules and Clusters

SN - 0178-7683

IS - 1-4

ER -