Nanotech 2003 Vol. 3
Nanotech 2003 Vol. 3
Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, Volume 3

Nano Devices and Systems Chapter 7

Magnetic Antidot Arrays with a Storage Density of 10 Gbits/cm2

Authors: Z.L. Xiao, C.Y. Han, U. Welp, H.H. Wang, G.A. Willing, V.K. Vlasko-Vlasov, W.K. Kwok, D.J. Miller, J.M. Hiller, R.E. Cook and G.W. Crabtree

Affilation: Argonne National Laboratory, United States

Pages: 357 - 360

Keywords: magnetic antidots, ultrahigh density storage media, anodic aluminum oxide

Large area nickel antidot arrays with density up to 10^10 /cm^2 have been fabricated by depositing nickel onto anodic aluminum oxide (AAO) membranes that contain lattices of nanopores. Electron microscopy images show a high degree of order of the antidot arrays. Various sizes and shapes of the antidots were observed with increasing thickness of the deposited nickel. New features appear in the antidot arrays in both magnetization and transport measurements when the external magnetic field is parallel to the current direction, including an enhancement and a nonmonotonous field dependence of the magnetoresistance, larger values of the coercive field and remanence moment, and smaller saturation field.

ISBN: 0-9728422-2-5
Pages: 560