Defects and growing mechanisms of α-Fe2O3 nanowires

被引：29

作者：

Han, Q.

Xu, Y. Y.

Fu, Y. Y.

Zhang, H. ^{[1
]}

Wang, R. M.

Wang, T. M.

Chen, Z. Y.

机构：

[1] Peking Univ, State Key Lab Mesoscop Phys, Dept Phys, Beijing 100871, Peoples R China

[2] Beijing Univ Aeronaut & Astronaut, Sch Sci, Beijing 100083, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 431卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

HIGH-TEMPERATURE; OXIDATION; GROWTH; OXIDE; IRON; WHISKERS;

D O I：

10.1016/j.cplett.2006.09.027

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：

The nanowires of hematite (alpha-Fe2O3) have been characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy (TEM), high-resolution TEM, energy-dispersive X-ray spectroscopy and electron energy-loss spectroscopy. It is discovered that there are three main shapes of alpha-Fe2O3 nanowires, needle-tip, large-tip, and bamboo-like. A diffusion equation is used to simulate the process of the growth of hematite nanowires. It is found that growing mechanism is quite different from normal vaporliquid-solid and vapor-solid ways, but roughly a diffusion mechanism. (c) 2006 Elsevier B.V. All rights reserved.

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页码：100 / 103

页数：4

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