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Controlling Domain Wall Pinning in Planar Nanowires by Selecting Domain Wall Type and its Application in a Memory Concept

Atkinson, D.; Eastwood, D.S.; Bogart, L.K.

Controlling Domain Wall Pinning in Planar Nanowires by Selecting Domain Wall Type and its Application in a Memory Concept Thumbnail


Authors

D.S. Eastwood

L.K. Bogart



Abstract

Here, we report on the control of domain wall pinning at notch features patterned in Permalloy planar nanowires by selecting the micromagnetic configuration of the domain wall using a transverse magnetic field. The domain wall behavior was investigated both experimentally using focused magneto-optic Kerr effect measurements of lithographically patterned nanowires and with micromagnetic simulations. The pinning behavior observed is utilized in a concept for multibit memory cells applicable as the free layer in magnetic random access memory where the domain structure is defined by the location of domain walls that either pin or passby pinning structures depending upon the domain wall configuration selected.

Citation

Atkinson, D., Eastwood, D., & Bogart, L. (2008). Controlling Domain Wall Pinning in Planar Nanowires by Selecting Domain Wall Type and its Application in a Memory Concept. Applied Physics Letters, 92(2), Article 022510. https://doi.org/10.1063/1.2832771

Journal Article Type Article
Publication Date Jan 14, 2008
Deposit Date Feb 3, 2012
Publicly Available Date Oct 29, 2012
Journal Applied Physics Letters
Print ISSN 0003-6951
Electronic ISSN 1077-3118
Publisher American Institute of Physics
Peer Reviewed Peer Reviewed
Volume 92
Issue 2
Article Number 022510
DOI https://doi.org/10.1063/1.2832771
Keywords Kerr magneto-optical effect, Magnetic domain walls, Nanowires, Permalloy, Random-access storage.

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Copyright Statement
© 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. The following article appeared in Atkinson, D. and Eastwood, D.S. and Bogart, L.K. (2008) 'Controlling domain wall pinning in planar nanowires by selecting domain wall type and its application in a memory concept.', Applied physics letters., 92 (2). 022510 and may be found at http://dx.doi.org/10.1063/1.2832771





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