Growth and surface alloying of Fe on Pt(997)

被引：30

作者：

Lee, Tae-Yon ^{[1
]}

Sarbach, Samuel ^{[1
]}

Kuhnke, Klaus ^{[1
]}

Kern, Klaus ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

SURFACE SCIENCE | 2006年 / 600卷 / 16期

关键词：

growth; surface diffusion; platinum; vicinal single crystal surfaces; iron; alloys; atom-solid scattering and diffraction-elastic;

D O I：

10.1016/j.susc.2006.06.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The growth of ultra-thin layers of Fe on the vicinal Pt(997) surface is studied by thermal energy He atom scattering (TEAS) and Auger Electron Spectroscopy (AES) in the temperature range between 175 K and 800 K. We find three distinct regimes of qualitatively different growth type. Below 450 K the formation of a smooth first monolayer, at and above 600 K the onset of bulk alloy formation, and at intermediate temperature 500-550 K the formation of a surface alloy. Monatomic Fe rows are observed to decorate the substrate steps between 175 K and 500 K. The importance of the high step density is discussed with respect to the promotion of smooth layer growth and with respect to the alloying process and its kinetics. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：3266 / 3273

页数：8

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