Xiao Z.L., Han C.Y., Welp U., Wang H.H., Willing G.A., Vlasko-Vlasov V.K., Kwok W.K., Miller D.J., Hiller J.M., Cook R.E., Crabtree G.W.
Argonne National Laboratory, US
Keywords: anodic aluminum oxide, magnetic antidots, ultrahigh density storage media
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.
Journal: TechConnect Briefs
Volume: 3, Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, Volume 3
Published: February 23, 2003
Pages: 357 - 360
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topic: Nanoelectronics
ISBN: 0-9728422-2-5