期刊
PARTICUOLOGY
卷 6, 期 5, 页码 334-339出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.partic.2008.04.006
关键词
Nanostructures; Iron oxides; Nanotubes; Magnetic properties
Magnetite (Fe3O4) nanotubes were prepared by reducing synthesized hematite (alpha-Fe2O3) nanotubes in 5% H-2+95% Ar atmosphere, and then maghemite (gamma-Fe2O3) nanotubes were obtained by re-oxidizing the Fe3O4 nanotubes. The nanotube structure was kept from collapsing or sintering throughout the high temperature reducing and re-oxidizing processes. The coercivities of the Fe3O4 and gamma-Fe2O3 nanotubes synthesized were found to be 340.22 Oe and 342.23 Oe, respectively, both higher than other nanostructures with the same phase and of similar size. Both adsorbed phosphate and the nanotube structure are considered responsible for this high coercivity. (C) 2008 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据