STM study of the nanostructures prepared by deposition of NiO on Ag(001)

被引：21

作者：

Caffio, M

Atrei, A

Cortigiani, B

Rovida, G

机构：

[1] Univ Siena, Dipartimento Sci & Tecnol Chim & Biosistemi, I-53100 Siena, Italy

[2] Univ Florence, Dipartimento Chim, I-55019 Sesto Fiorentino, FI, Italy

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2006年 / 18卷 / 08期

关键词：

D O I：

10.1088/0953-8984/18/8/003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Submonolayers of nickel oxide were grown on the Ag(001) surface by evaporation of Ni in the presence of O-2 at a pressure of 1 X 10(-6) mbar. In the early stages of deposition, two-dimensional oxide islands with a (2 x 1) periodicity grow on Ag(001). After annealing at about 500 K the (2 x 1) single atomic layer transforms into NiO(001) double layer islands. The 1:1 stoichiometry of the film is not influenced by whether the annealing is carried out in vacuum or in the presence of oxygen. However, the oxide islands exhibit different morphologies depending on the O-2 pressure during the annealing process.

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页码：2379 / 2384

页数：6

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