Synchrotron investigations of the initial stage of tin nanolayers oxidation

被引：11

作者：

Domashevskaya, E. P. ^{[1
]}

Yurakov, Yu. A. ^{[1
]}

Ryabtsev, S. V. ^{[1
]}

Chuvenkova, O. A. ^{[1
]}

Kashkarov, V. M. ^{[1
]}

Turishchev, S. Yu. ^{[1
]}

机构：

[1] Voronezh State Univ, Voronezh 394006, Russia

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2007年 / 156卷 / 340-343期

关键词：

nanolayers; tin oxide; tin dioxide; XANES OK-edge; XANES Sn M-4.5;

D O I：

10.1016/j.elspec.2006.11.042

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Initial stages of thermal oxidation of metal tin nanolayers (100 nm) in the air were investigated using X-ray absorption near edge structure (XANES) technique. Analysis of the XANES data revealed that in the metal film exposed to air at room temperature an oxygen K-edge is observed. Its structureless shape indicates the formation of amorphous Sn-O phase in the surface layer. At the same time from Sn M-4.5-spectra of the same tin film one can see M-4.5 absorption edges characteristic of the elementary tin and for its oxide as well. The fine structure near the absorption edges for both elements (tin and oxygen) in the sample annealed at 170 degrees C correlates quite well and it corresponds to the results of calculations of the density of p-states for tetragonal SnO monoxide. The changes in the fine structures of O K-edge and Sn M-4,M-5-spectra with the increase of the oxidation temperature up to 240 degrees C indicates the appearance of SnO2 in the nanolayers, which becomes a predominant one under the further increase of annealing temperature. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：340 / 343

页数：4

共 8 条

[1]

Cetin K, 2002, PHYS REV LETT, V88

[2] TEM and XANES investigations and optical properties of SnO nanolayers [J].