Thermal oxidation synthesis and magnetic properties of large-area α-Fe2O3 nanobelts

被引：0

作者：

Zhong, Ming-Long ^{[1
,2
]}

Liu, Zhong-Wu ^{[1
]}

Jiao, Dong-Ling ^{[1
]}

Zhong, Xi-Chun ^{[1
]}

Yu, Hong-Ya ^{[1
]}

Zeng, De-Chang ^{[1
]}

机构：

[1] School of Materials Science and Engineering, South China University of Technology

[2] Engineering Research Institute, Jiangxi University of Science and Technology

来源：

Gongneng Cailiao/Journal of Functional Materials | 2014年 / 45卷 / 06期

关键词：

Growth mechanism; Magnetic materials; Nanobelts;

D O I：

10.3969/j.issn.1001-9731.2014.06.027

中图分类号：

学科分类号：

摘要：

Large-area α-Fe2O3 nanobelts were synthesized by heating the Fe film on silicon substrate in air, using a very simple hotplate technique. The morphologies, crystal structures, growth mechanism and magnetic properties of the nanobelts were investigated. The results showed that single-crystal α-Fe2O3 nanobelts grew perpendicularly to the substrate along [110] direction with a very sharp tip about 10-50 nm. The length of the nanobelts were from hundreds nanometers to several micrometers. A diffusion mechanism was responsible for the α-Fe2O3 nanostructure growth at relatively low temperatures. The Morin temperature TM and Néel temperature TN of α-Fe2O3 nanostructures were only 113 and 814 K, respectively, which were about 150 K lower than those for their bulk counterpart.

引用

页码：06126 / 06130

页数：4

共 29 条

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