Effect of annealing on Ag films on Pt(111)

J. S. Tsay, C. S. Shern*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

12 引文 斯高帕斯(Scopus)

摘要

Low-energy electron diffraction (LEED), Auger electron spectroscopy and ultraviolet photoelectron spectroscopy (UPS) were used to study the annealing effect of the silver ultrathin film on a Pt(111) surface. The intensities of the specular beam of LEED versus temperature have abnormal change between 550 and 650 K in a submonolayer range. The irreversibility of this I-T curve gives evidence of a structure change of the surface. The intensity of the specular beam of LEED varying with annealing time plus the Auger signals of Ag and Pt function of temperatures show that a disordered two-dimensional (2D) Ag-Pt alloy is formed in the submonolayer range at a temperature between 600 and 700 K. UP spectra in the growth process show that the d band and the Fermi edge have some interesting changes. On the other hand, UPS in the annealing process also strongly suggests that Ag and Pt atoms mix on the top layer to form a 2D surface alloy at a temperature between 600 and 700 K and a coverage in the submonolayer range.

原文英語
頁(從 - 到)2522-2526
頁數5
期刊Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
14
發行號4
DOIs
出版狀態已發佈 - 1996 一月 1

ASJC Scopus subject areas

  • 凝聚態物理學
  • 表面和介面
  • 表面、塗料和薄膜

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