Atomic-scale observations of alloying at the Cr-Fe(001) interface

被引：199

作者：

Davies, A

Stroscio, JA

Pierce, DT

Celotta, RJ

机构：

[1] Electron Physics Group, National Institute of Standards and Technology, Gaithersburg, MD, 20899, 2753 Ishii-machi, Tochigi

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.76.4175

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

While much progress has been made using epitaxial growth of Fe/Cr/Fe structures to study magnetic exchange coupling, a number of anomalies have arisen in studies of this model system. Using scanning tunneling microscopy and spectroscopy to investigate Cr growth on Fe(001), we have identified a potential structural cause of these anomalies. We show that Cr growth under layer-by-layer conditions on Fe(001) leads to the formation of a Cr-Fe alloy. We exploit a Cr and Fe surface state to identify single Cr impurities in Fe and evaluate the alloy concentrations with increasing Cr coverage.

引用

页码：4175 / 4178

页数：4

共 22 条

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