ATOMIC-STRUCTURE OF FEAL(001)

被引：26
|
作者：
WANG, CP
JONA, F
GLEASON, NR
STRONGIN, DR
MARCUS, PM
机构：
[1] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598
[2] SUNY STONY BROOK,DEPT CHEM,STONY BROOK,NY 11794
来源：
SURFACE SCIENCE | 1993年 / 298卷 / 01期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0039-6028(93)90087-Z
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 atomic structure of a clean {001} surface of the ordered binary alloy FeAl with 46 at% Al (lattice parameter 2.904 angstrom) has been determined by low-energy electron diffraction analysis. The bulk structure is of the CsCl-type. The top surface plane is shown to be an Al layer, with an Fe plane for the second layer. The first interlayer spacing (between Al and Fe) is found to be contracted by 14.6%, while the second interlayer spacing (between Fe and Al) is found to be expanded by 4%. A sputter-cleaned but not annealed surface of this alloy is found to have ordered regions of predominantly bcc Fe{001}.
引用
收藏
页码：114 / 120
页数：7
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