Studies of oxidation of iron nanowires encased in porous aluminium oxide template

被引：0
|
作者：
Kęstutis Mažeika
Jonas Reklaitis
Arūnas Jagminas
Dalis Baltrūnas
机构：
[1] Institute of Physics,
[2] Institute of Chemistry,undefined
来源：
Hyperfine Interactions | 2009年 / 189卷
关键词：
Iron nanowires; Anodic alumina templates; Mössbauer spectroscopy; Annealing;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The transformations of phase composition of iron nanowires deposited into porous alumina template when annealing in the air were studied. The samples of iron nanowires of different diameter (8, 13, 15, 30 nm) were annealed for 1.5 h at temperature up to 600°C. In addition, for nanowires of 15 nm diameter the dependence of phase composition on annealing time was investigated. The phases were determined by applying Mössbauer spectroscopy. New Fe(II) and Fe(III) contributions to Mössbauer spectra were found and those were indentified as caused by the formation of hercynite FeAl2O4 and (FexAl1 − x)2O3 with small x values (x ≤ 0.15). It has been found that though initially the Fe(II) compound forms rapidly, afterwards its formation rate becomes lower than that of Fe(III) and after longer annealing time the Fe(III) content exceeds Fe(II) one.
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页码：137 / 142
页数：5
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