Growth surface alloy formation of Ag on Pt(111)

研究成果: 雜誌貢獻文章

8 引文 (Scopus)

摘要

Low-energy electron diffraction (LEED), Auger electron spectroscopy (AES) and ultraviolet photoelectron spectroscopy (UPS) were used to study the growth mode and the surface structure of a silver ultra-thin film deposited on a Pt(111) surface at 360 K. The AES and LEED results show that the growth of Ag/Pt(111) belongs to the Stranski-Krastanov mode. The growth mechanism is discussed. The electron density of states in the growth process was investigated by UPS. A splitting of Ag 4d5/2 and Ag 4d3/2 was observed as the absorbed Ag atoms changed from an atomic state to a solid state. In the LEED study, the intensity of the specular beam versus the surface temperature has an abnormal change and is irreversible between 550 K and 650 K, as the coverage is in the submonolayer range. These phenomena, and the Auger-intensity ratio of Ag and Pt varying with the temperature, show that a two-dimensional surface alloy develops at a temperature above 550 K, as the coverage is within one monolayer.

原文英語
頁(從 - 到)130-137
頁數8
期刊Chinese Journal of Physics
34
發行號2 I
出版狀態已發佈 - 1996 十二月 1

指紋

electron diffraction
ultraviolet spectroscopy
Auger spectroscopy
electron spectroscopy
photoelectron spectroscopy
surface temperature
energy
silver
solid state
temperature
thin films
atoms

ASJC Scopus subject areas

  • Physics and Astronomy(all)

引用此文

Growth surface alloy formation of Ag on Pt(111). / Tsay, J. S.; Shern, C. S.

於: Chinese Journal of Physics, 卷 34, 編號 2 I, 01.12.1996, p. 130-137.

研究成果: 雜誌貢獻文章

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abstract = "Low-energy electron diffraction (LEED), Auger electron spectroscopy (AES) and ultraviolet photoelectron spectroscopy (UPS) were used to study the growth mode and the surface structure of a silver ultra-thin film deposited on a Pt(111) surface at 360 K. The AES and LEED results show that the growth of Ag/Pt(111) belongs to the Stranski-Krastanov mode. The growth mechanism is discussed. The electron density of states in the growth process was investigated by UPS. A splitting of Ag 4d5/2 and Ag 4d3/2 was observed as the absorbed Ag atoms changed from an atomic state to a solid state. In the LEED study, the intensity of the specular beam versus the surface temperature has an abnormal change and is irreversible between 550 K and 650 K, as the coverage is in the submonolayer range. These phenomena, and the Auger-intensity ratio of Ag and Pt varying with the temperature, show that a two-dimensional surface alloy develops at a temperature above 550 K, as the coverage is within one monolayer.",
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