Demixing processes in AgPd superlattices

J. Dumont; R. Sporken; M. J. Verstraete; J. Ghijsen; X. Gonze

doi:10.1088/0953-8984/21/31/315002

Demixing processes in AgPd superlattices

J. Dumont, R. Sporken, M. J. Verstraete, J. Ghijsen, X. Gonze

Résultats de recherche: Contribution à un journal/une revue › Article › Revue par des pairs

Résumé

The present scanning tunneling microscopy (STM) study describes the growth of silver-palladium heterostructures at room temperature, with ab initio simulations of ordered AgPd phases supporting the interpretation of STM images. First, the growth of Pd on an Ag(111) surface proceeds in a multilayer mode, leading to the formation of a columnar structure. Then, upon Ag deposition on this structure, Ag and Pd partially mix and form a two-dimensional AgPd alloy on top of the columns. Finally, an atomically flat Ag(111) surface is restored, and two-dimensional growth continues. An interpretation of this peculiar growth mode including interfacial alloying is proposed based on thermodynamic and kinetic arguments.

langue originale	Anglais
Numéro d'article	315002
journal	Journal of Physics: Condensed Matter
Volume	21
Numéro de publication	31
Les DOIs	https://doi.org/10.1088/0953-8984/21/31/315002
Etat de la publication	Publié - 2009

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10.1088/0953-8984/21/31/315002

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Contient cette citation

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title = "Demixing processes in AgPd superlattices",

abstract = "The present scanning tunneling microscopy (STM) study describes the growth of silver-palladium heterostructures at room temperature, with ab initio simulations of ordered AgPd phases supporting the interpretation of STM images. First, the growth of Pd on an Ag(111) surface proceeds in a multilayer mode, leading to the formation of a columnar structure. Then, upon Ag deposition on this structure, Ag and Pd partially mix and form a two-dimensional AgPd alloy on top of the columns. Finally, an atomically flat Ag(111) surface is restored, and two-dimensional growth continues. An interpretation of this peculiar growth mode including interfacial alloying is proposed based on thermodynamic and kinetic arguments.",

author = "J. Dumont and R. Sporken and Verstraete, {M. J.} and J. Ghijsen and X. Gonze",

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AU - Gonze, X.

PY - 2009

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AB - The present scanning tunneling microscopy (STM) study describes the growth of silver-palladium heterostructures at room temperature, with ab initio simulations of ordered AgPd phases supporting the interpretation of STM images. First, the growth of Pd on an Ag(111) surface proceeds in a multilayer mode, leading to the formation of a columnar structure. Then, upon Ag deposition on this structure, Ag and Pd partially mix and form a two-dimensional AgPd alloy on top of the columns. Finally, an atomically flat Ag(111) surface is restored, and two-dimensional growth continues. An interpretation of this peculiar growth mode including interfacial alloying is proposed based on thermodynamic and kinetic arguments.

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JF - Journal of Physics: Condensed Matter

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ER -

Demixing processes in AgPd superlattices

Résumé

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Équipement

Microscopie à effet tunnel

Synthèse, Irradiation et Analyse de Matériaux (SIAM) (2016 - ...)

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