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http://repositorio.unicamp.br/jspui/handle/REPOSIP/108949
Type: | Artigo |
Title: | Characterization of ultra-thin films of Pd deposited on Au(111) |
Author: | Pancotti, A. Nascente, P. A. P. Siervo, A. de Landers, R. Carazzolle, M. F. Tallarico, D. A. Kleiman, G. G. |
Abstract: | Ultra-thin films (1 and 3 monolayers) of Pd were deposited on the Au(111) surface and then characterized by X-ray photoelectron spectroscopy (XPS), X-ray excited Auger spectroscopy (XAES), low-energy electron diffraction (LEED), and X-ray photoelectron diffraction (XPD). For the 1 ML Pd film annealed at 450 °C, XPS and XAES results indicated that Pd had diffused into the Au substrate. For the 3 ML Pd film deposited at room temperature, the comparison between experimental and theoretical XPD results indicated approximately 30% of the surface was formed by 2 ML Au layers, and 70% of the surface, by 1 ML Au layers. © 2011 Springer Science+Business Media, LLC 2011. Ultra-thin films (1 and 3 monolayers) of Pd were deposited on the Au(111) surface and then characterized by X-ray photoelectron spectroscopy (XPS), X-ray excited Auger spectroscopy (XAES), low-energy electron diffraction (LEED), and X-ray photoelectron diffraction (XPD). For the 1 ML Pd film annealed at 450 C, XPS and XAES results indicated that Pd had diffused into the Au substrate. For the 3 ML Pd film deposited at room temperature, the comparison between experimental and theoretical XPD results indicated approximately 30% of the surface was formed by 2 ML Au layers, and 70% of the surface, by 1 ML Au layers. Ultra-thin films (1 and 3 monolayers) of Pd were deposited on the Au(111) surface and then characterized by X-ray photoelectron spectroscopy (XPS), X-ray excited Auger spectroscopy (XAES), low-energy electron diffraction (LEED), and X-ray photoelectron diffraction (XPD). For the 1 ML Pd film annealed at 450 C, XPS and XAES results indicated that Pd had diffused into the Au substrate. For the 3 ML Pd film deposited at room temperature, the comparison between experimental and theoretical XPD results indicated approximately 30% of the surface was formed by 2 ML Au layers, and 70% of the surface, by 1 ML Au layers. |
Subject: | Paládio Fotoelétrons - Difração Radiação sincrotrônica Difração eletrônica em baixa energia Superfícies (Física) |
Country: | Estados Unidos |
Editor: | Springer |
Citation: | Topics In Catalysis. , v. 54, n. 01/04/15, p. 70 - 76, 2011. |
Rights: | fechado |
Identifier DOI: | 10.1007/s11244-011-9649-2 |
Address: | https://link.springer.com/article/10.1007/s11244-011-9649-2 |
Date Issue: | 2011 |
Appears in Collections: | IFGW - Artigos e Outros Documentos |
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2-s2.0-79951942115.pdf | 668.63 kB | Adobe PDF | View/Open |
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