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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Detalles Bibliográficos
Publicado:	2014
Materias:	DFT Gold-copper alloy Metals and alloys Photoelectron spectroscopies XPS Angle-resolved X-ray photoelectron spectroscopy Gold-copper alloys Low concentrations Polycrystalline au Surface enrichment Thermally induced Alloys Atoms Density functional theory Lead Metallurgy Photoelectron spectroscopy Photoelectrons Surface segregation X ray photoelectron spectroscopy Cerium alloys
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v586_n_p475_Volker http://hdl.handle.net/20.500.12110/paper_09258388_v586_n_p475_Volker
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09258388_v586_n_p475_Volker
record_format	dspace
spelling	paper:paper_09258388_v586_n_p475_Volker2023-06-08T15:51:28Z ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys 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 Â 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. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v586_n_p475_Volker http://hdl.handle.net/20.500.12110/paper_09258388_v586_n_p475_Volker
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	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 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 Â 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.
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
publishDate	2014
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v586_n_p475_Volker http://hdl.handle.net/20.500.12110/paper_09258388_v586_n_p475_Volker
_version_	1768543904120963072

ARXPS and DFT studies of thermally induced Pb surface segregation on Au/Cu alloys

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