Kinetic study of the formation of a surface-confined Cu50Pt50 alloy

J. S. Tsay; T. Mangen; K. Wandelt

doi:10.1016/S0040-6090(01)01409-2

Kinetic study of the formation of a surface-confined Cu₅₀Pt₅₀ alloy

J. S. Tsay, T. Mangen, K. Wandelt

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Using Auger electron spectroscopy we demonstrate the determination of the energy barrier for the formation of a surface-confined Cu₅₀Pt₅₀(111) bilayer alloy. Starting with one monolayer of Cu on Pt(111) concentration changes are determined as a function of annealing temperature up to 600 K and annealing time. Comparison of the experimental data with Monte Carlo simulations give the best result for the assumption of a Cu₅₀Pt₅₀ surface alloy yielding an energy barrier for interlayer mixing of 1.11±0.12 eV/atom. Concomitant valence band photoemission spectra also indicate the alloy formation.

Original language	English
Pages (from-to)	152-156
Number of pages	5
Journal	Thin Solid Films
Volume	397
Issue number	1-2
DOIs	https://doi.org/10.1016/S0040-6090(01)01409-2
Publication status	Published - 2001 Nov 1
Externally published	Yes

Keywords

Alloys
Auger electron spectroscopy
Copper
Diffusion
Platinum
Surface segregation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0040-6090(01)01409-2

Cite this

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title = "Kinetic study of the formation of a surface-confined Cu50Pt50 alloy",

abstract = "Using Auger electron spectroscopy we demonstrate the determination of the energy barrier for the formation of a surface-confined Cu50Pt50(111) bilayer alloy. Starting with one monolayer of Cu on Pt(111) concentration changes are determined as a function of annealing temperature up to 600 K and annealing time. Comparison of the experimental data with Monte Carlo simulations give the best result for the assumption of a Cu50Pt50 surface alloy yielding an energy barrier for interlayer mixing of 1.11±0.12 eV/atom. Concomitant valence band photoemission spectra also indicate the alloy formation.",

keywords = "Alloys, Auger electron spectroscopy, Copper, Diffusion, Platinum, Surface segregation",

author = "Tsay, {J. S.} and T. Mangen and K. Wandelt",

note = "Funding Information: One of the authors (J.S. Tsay) acknowledges support from the Alexander von Humboldt Foundation. ",

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doi = "10.1016/S0040-6090(01)01409-2",

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TY - JOUR

T1 - Kinetic study of the formation of a surface-confined Cu50Pt50 alloy

AU - Tsay, J. S.

AU - Mangen, T.

AU - Wandelt, K.

N1 - Funding Information: One of the authors (J.S. Tsay) acknowledges support from the Alexander von Humboldt Foundation.

PY - 2001/11/1

Y1 - 2001/11/1

N2 - Using Auger electron spectroscopy we demonstrate the determination of the energy barrier for the formation of a surface-confined Cu50Pt50(111) bilayer alloy. Starting with one monolayer of Cu on Pt(111) concentration changes are determined as a function of annealing temperature up to 600 K and annealing time. Comparison of the experimental data with Monte Carlo simulations give the best result for the assumption of a Cu50Pt50 surface alloy yielding an energy barrier for interlayer mixing of 1.11±0.12 eV/atom. Concomitant valence band photoemission spectra also indicate the alloy formation.

AB - Using Auger electron spectroscopy we demonstrate the determination of the energy barrier for the formation of a surface-confined Cu50Pt50(111) bilayer alloy. Starting with one monolayer of Cu on Pt(111) concentration changes are determined as a function of annealing temperature up to 600 K and annealing time. Comparison of the experimental data with Monte Carlo simulations give the best result for the assumption of a Cu50Pt50 surface alloy yielding an energy barrier for interlayer mixing of 1.11±0.12 eV/atom. Concomitant valence band photoemission spectra also indicate the alloy formation.

KW - Alloys

KW - Auger electron spectroscopy

KW - Copper

KW - Diffusion

KW - Platinum

KW - Surface segregation

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