Effect of annealing on nanostructured Fe networks

Contiguous nanostructured Fe network structures sputter deposited on a porous template (nanochannel alumina) have been shown to have a high coercivity due to shape anisotropy. When these networks are vacuum annealed, even at modest temperatures, there is a significant improvement in their in-plane c...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 1997-09, Vol.33 (5), p.3628-3630
Main Authors: Weston, J.L., Butera, A., Inturi, V.R., Jarratt, J.D., Klemmer, T.J., Barnard, J.A.
Format: Article
Language:English
Subjects:
Anisotropic magnetoresistance
Annealing
Coercive force
Electrons
Geometry
Iron
Nanostructures
Network topology
Shape
Temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Contiguous nanostructured Fe network structures sputter deposited on a porous template (nanochannel alumina) have been shown to have a high coercivity due to shape anisotropy. When these networks are vacuum annealed, even at modest temperatures, there is a significant improvement in their in-plane coercivities. The shape of the annealed coercivity vs. thickness plot is a function of the substrate geometry. The maximum coercivity obtained through annealing is /spl sim/1390 Oe and appears to be an absolute maximum. The topology of these networks when viewed by a scanning electron microscope undergoes morphological changes perpendicular to the plane of the network upon annealing. The annealed structures have the appearance of a modified "chain of spheres", or a mesh of spheres.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.619519