Abstract:
Surface segregation of Pb has been studied using angle resolved X-ray Photoelectron Spectroscopy (ARXPS) and Density Functional Theory (DFT) modelling in a polycrystalline Au0.85Cu0.15 alloy. Au surface enrichment was found in the alloy surface, whereas Pb surface enrichment was detected after annealing. ARXPS depth profiles show a 23% surface coverage by Pb atoms. DFT calculations predict an approximate coverage of  monolayer (ML) of Pb atoms in the first atomic layer, consistent with the experimental results. The results presented here are an example of the importance of low concentration of impurities in determining the surface composition of bulk alloys. © 2013 Elsevier B.V. All rights reserved.
Registro:
Documento: |
Artículo
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Título: | ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys |
Autor: | Völker, E.; Williams, F.J.; Jacob, T.; Schiffrin, D.J. |
Filiación: | Chemistry Department, University of Liverpool, Liverpool L69 7ZD, United Kingdom Departamento de Química Inorgánica, Analítica y Química Física, Universidad de Buenos Aires, Buenos Aires C1428EHA, Argentina Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
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Palabras clave: | DFT; Gold-copper alloy; Metals and alloys; Photoelectron spectroscopies; XPS; Angle-resolved X-ray photoelectron spectroscopy; DFT; Gold-copper alloys; Low concentrations; Metals and alloys; Polycrystalline au; Surface enrichment; Thermally induced; Alloys; Atoms; Density functional theory; Lead; Metallurgy; Photoelectron spectroscopy; Photoelectrons; Surface segregation; X ray photoelectron spectroscopy; Cerium alloys |
Año: | 2014
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Volumen: | 586
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Página de inicio: | 475
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Página de fin: | 478
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DOI: |
http://dx.doi.org/10.1016/j.jallcom.2013.10.119 |
Título revista: | Journal of Alloys and Compounds
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Título revista abreviado: | J Alloys Compd
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ISSN: | 09258388
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CODEN: | JALCE
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v586_n_p475_Volker |
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Citas:
---------- APA ----------
Völker, E., Williams, F.J., Jacob, T. & Schiffrin, D.J.
(2014)
. ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys. Journal of Alloys and Compounds, 586, 475-478.
http://dx.doi.org/10.1016/j.jallcom.2013.10.119---------- CHICAGO ----------
Völker, E., Williams, F.J., Jacob, T., Schiffrin, D.J.
"ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys"
. Journal of Alloys and Compounds 586
(2014) : 475-478.
http://dx.doi.org/10.1016/j.jallcom.2013.10.119---------- MLA ----------
Völker, E., Williams, F.J., Jacob, T., Schiffrin, D.J.
"ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys"
. Journal of Alloys and Compounds, vol. 586, 2014, pp. 475-478.
http://dx.doi.org/10.1016/j.jallcom.2013.10.119---------- VANCOUVER ----------
Völker, E., Williams, F.J., Jacob, T., Schiffrin, D.J. ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys. J Alloys Compd. 2014;586:475-478.
http://dx.doi.org/10.1016/j.jallcom.2013.10.119