High-quality Fe(001) single crystal films on MgO(001) substrates for electron spectroscopies

被引:58
作者
Bertacco, R [1 ]
De Rossi, S [1 ]
Ciccacci, F [1 ]
机构
[1] Politecn Milan, INFM, Dipartimento Fis, I-20133 Milan, Italy
来源
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 1998年 / 16卷 / 04期
关键词
D O I
10.1116/1.581340
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Fe films have been prepared in ultrahigh vacuum by epitaxial growth on MgO(001) substrates. Spin-resolved inverse photoemission measurements indicate that nonannealed overlayers display lower spectroscopic quality than the corresponding bulk system. Low energy electron diffraction and x-ray photoemission reveal that annealing promotes oxygen surface segregation giving rise to a c(2 x 2) reconstruction even in several hundred Angstrom thick films. It is found that high-quality Fe(001) single crystal films with clean and well ordered surfaces can be obtained after high temperature annealing (similar to 600 degrees C) of relatively thick films (>1000 Angstrom). (C) 1998 American Vacuum Society. [S0734-2101(98)05604-8].
引用
收藏
页码:2277 / 2280
页数:4
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