ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys
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 annea...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09258388_v586_n_p475_Volker |
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todo:paper_09258388_v586_n_p475_Volker2023-10-03T15:46:28Z ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys Völker, E. Williams, F.J. Jacob, T. Schiffrin, D.J. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09258388_v586_n_p475_Volker |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Völker, E. Williams, F.J. Jacob, T. Schiffrin, D.J. ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Völker, E. Williams, F.J. Jacob, T. Schiffrin, D.J. |
| author_facet |
Völker, E. Williams, F.J. Jacob, T. Schiffrin, D.J. |
| author_sort |
Völker, E. |
| title |
ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys |
| title_short |
ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys |
| title_full |
ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys |
| title_fullStr |
ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys |
| title_full_unstemmed |
ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys |
| title_sort |
arxps and dft studies of thermally induced pb surface segregation on au/cu alloys |
| url |
http://hdl.handle.net/20.500.12110/paper_09258388_v586_n_p475_Volker |
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