Journal
PARTICUOLOGY
Volume 6, Issue 5, Pages 334-339Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.partic.2008.04.006
Keywords
Nanostructures; Iron oxides; Nanotubes; Magnetic properties
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available