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Magnetism in Cylindrical NiFe Nanotubes

Published online by Cambridge University Press:  01 February 2011

hwifen liew ,
Sarjoosing Goolaup ,
Xinghua Wang  and
Wensiang Lew
hwifen liew
Affiliation:
[email protected], Nanyang technological University, Singapore, Singapore
Sarjoosing Goolaup
Affiliation:
[email protected], Nanyang technological University, Singapore, Singapore
Xinghua Wang
Affiliation:
[email protected], Nanyang technological University, Singapore, Singapore
Wensiang Lew
Affiliation:
[email protected], Nanyang technological University, Singapore, Singapore
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Abstract

We report the fabrication of ferromagnetic NiFe nanotubes with a wall thickness of 80 nm by electrodeposition in nanoporous templates. The structure and wall thickness of the nanotubes are controlled by the thickness of the conductive layer at the back of the templates. The NiFe nanotubes have shown soft magnetic material properties with high magnetic saturation and low coercivity. The NiFe nanotube arrays are preferentially magnetized in the perpendicular direction to the nanotubes. Micromagnetic simulation results show that a curling mode is perceived with the formation of opposite magnetic vortex states on the end of the nanotube surface during the magnetization process.

Keywords

nanostructurespintronicferromagnetic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1258: Symposia P/Q/R – Low-Dimensional Functional Nanostructures-Fabrication, Characterization and Applications , 2010 , 1258-Q09-07
Copyright
Copyright © Materials Research Society 2010

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