360° domain walls: stability, magnetic field and electric current effects
Name
Zhang-2016-360° Domain walls_ S.pdf
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2.45 MB
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Adobe PDF
Checksum (MD5)
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Author(s)
Zhang, Jinshuo
Siddiqui, Saima Afroz
Ho, Pin
Currivan, Jean Anne
Lage, Enno
Bono, David C
Baldo, Marc A
Ross, Caroline A.
Date Issued
May 2016
Journal
New Journal of Physics
Publisher
IOP Publishing
Citation
Zhang, Jinshuo et al. “360° Domain Walls: Stability, Magnetic Field and Electric Current Effects.” New Journal of Physics 18.5 (2016): 53028. © 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
Version
Final published version
Abstract
The formation of 360° magnetic domain walls (360DWs) in Co and Ni[subscript 80]Fe[subscript 20] thin film wires was demonstrated experimentally for different wire widths, by successively injecting two 180° domain walls (180DWs) into the wire. For narrow wires (≤ 50 nm wide for Co), edge roughness prevented the combination of the 180DWs into a 360DW, and for wide wires (200 nm for Co) the 360DW was unstable and annihilated spontaneously, but over an intermediate range of wire widths, reproducible 360DW formation occurred. The annihilation and dissociation of 360DWs was demonstrated by applying a magnetic field parallel to the wire, showing that annihilation fields were several times higher than dissociation fields in agreement with micromagnetic modeling. The annihilation of a 360DW by current pulsing was demonstrated.
MIT Department
Massachusetts Institute of Technology. Center for Materials Science and Engineering
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Creative Commons Attribution 3.0 Unported licence
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DOI of Published Version
https://doi.org/10.1088/1367-2630/18/5/053028
