Clusters of interacting single domain Co nanomagnets for multistate perpendicular magnetic media applications

Xiao, Qijun and Yang, Tianyu and Ursache, Andrei and Tuominen, Mark T.. (2008) Clusters of interacting single domain Co nanomagnets for multistate perpendicular magnetic media applications. Journal of Applied Physics, 103 (7). 07C521. ISSN 00218979

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Abstract

In this work we develop prototype elements for multistate (beyond binary) perpendicular data storage using interacting nanomagnet clusters. This experimental work confirms earlier theoretical work that predicted multiple discrete values of stable remanent magnetization for such clusters. The fabrication scheme is based on ultrahigh resolution electron beam lithography performed on a thin suspended silicon nitride membrane to reduce the secondary backscattered electrons from the substrate. A Co nanomagnet cluster array is deposited into the nanotemplate via pulse-reverse electrodeposition to create nanomagnets with the favored uniaxial perpendicular anisotropy. Magnetic force microscopy (MFM) measurements show the perpendicular magnetization of individual Co nanomagnets and the combined multiconfiguration behavior of a nanomagnet cluster. In concept, the discrete values of net remanent magnetization of the cluster, which represent distinct information states, can be “programmed” by a uniform applied field.

Item Type: Article
Additional Information: "Reprinted with permission from QJ. Xiao et al. "Clusters of interacting single domain Co nanomagnets for multistate perpendicular magnetic media applications", Copyright 2008, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics"
InterNano Taxonomy: Nanoscale Objects and Nanostructured Materials > Nanodevice Structures > Magnetic data storage
Nanomanufacturing Characterization Techniques > Scanning Probe Microscopy > Magnetic force microscopy (MFM)
Nanomanufacturing Processes > Nanopatterning/Lithography > Electron-beam lithography
Areas of Application > Materials and Chemical Industries and Green Manufacturing
Collections: Nanomanufacturing Research Collection > Nanomanufacturing Nanoscale Science and Engineering Centers > Center for Hierarchical Manufacturing
Nanomanufacturing Research Collection
Depositing User: Moureen Kemei
Date Deposited: 04 Feb 2010 13:55
Last Modified: 19 Sep 2011 21:40
URI: http://eprints.internano.org/id/eprint/258

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