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

页码：59 / 62

页数：4

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