Single NbO nano-crystal formation on low temperature annealed Nb(001) surface

被引：19
|
作者：
Uehara, Y
Fujita, T
Iwami, M
Ushioda, S
机构：
[1] Tohoku Univ, Elect Commun Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan
[2] Japan Sci & Technol Corp, CREST, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
SURFACE SCIENCE | 2001年 / 472卷 / 1-2期
关键词：
X-ray photoelectron spectroscopy; scanning tunneling microscopy; surface structure morphology; roughness; and; topography; niobium;
D O I：
10.1016/S0039-6028(00)00922-5
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：
We have investigated the (0 0 1) surface of single crystal niobium annealed at 1000 degreesC in ultra-high vacuum. Oxygen as well as niobium atoms were detected from the surface with the composition ratio of Nb:O = 1:0.9 by X-ray photoemission spectroscopy. Scanning tunneling microscopy observation revealed that the entire surface is covered by small (nanometer in size) protrusions having a pyramid shape with a flat top. Based on these results we have concluded that the protrusions are single nano-crystals of NbO grown epitaxially on the (001) surface of metallic niobium. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：59 / 62
页数：4
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