Document Type

Article

Publication Title

Journal of Applied Physics

Publication Date

5-12-2005

Volume

97

Disciplines

Biochemistry | Chemistry | Life Sciences | Physical Sciences and Mathematics | Physics

Abstract

Regular nanosized structures are considered to be promising materials for magnetic information storage media with high density of information. Recently attention was paid to static and dynamic magnetic properties arising from dimensional confinement in such nanostructures. Here we present an investigation of permalloy antidot arrays of different thicknesses. Thin permalloyfilms of thickness ranging from were deposited on nanoporous membranes with a pore size of . It was found that additional ferromagnetic resonance peaks appear for film thicknesses below , while films with larger thicknesses show resonanceproperties similar to continuous films. A comparison between the filmsdeposited onto Si wafers and porous media was done. An evolution of the domain structures observed in MFM experiments was confirmed by micromagnetic calculations.

Keywords

thin films, magnetic films, sputter deposition, permalloys, materials properties, nanomagnetism, surface structure, thin film structure, ferromagnetic resonance, static properties

DOI

10.1063/1.1853691

Comments

Link to Publisher's Version

This work was supported through the grants from DARPA (MDA972-04-1-0029) and from the National Science Foundation (CCF-0403673).

Rights

© 2005 American Institute of Physics

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