Crystallinity and thickness control of well-ordered ultra-thin Al2O3 film on NiAl(110)

被引:27
|
作者
Yoshitake, M [1 ]
Mebarki, B [1 ]
Lay, TT [1 ]
机构
[1] Natl Inst Mat Sci, Nanomat Lab, Tsukuba, Ibaraki 3050003, Japan
关键词
aluminum oxide; insulating films; epitaxy; crystallization; low energy electron diffraction (LEED); auger electron spectroscopy;
D O I
10.1016/S0039-6028(02)01567-4
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
Epitaxial film of well-ordered ultra-thin (0.5 nm) Al2O3 is known to grow on NiAl(1 1 0) by 1200 L oxygen introduction. We found that the crystallinity of the epitaxial film was improved by introducing 1200 L oxygen at lower pressure. Control of the thickness of the epitaxial Al2O3 film was also achieved, by multiple-oxidation, for the first time. Successful thickness control of epitaxial Al2O3 film in the range of 0.5-1.4 nm is considered an important step toward a tunneling electron emitter device, as well as basic research for model catalysts. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:L313 / L318
页数:6
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