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
收藏
页码：4175 / 4178
页数：4
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