Formation and structure of 360 and 540 degree domain walls in thin magnetic stripes

360°, 540°, and other complex transverse domain walls have been created in narrow cobalt wires connected to injection pads by cycling a magnetic field perpendicular to the wire length. The composite walls, formed by impingement of 180° transverse walls of alternating chirality, are stable over a wid...

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Bibliographic Details
Published in:Applied physics letters 2012-02, Vol.100 (6), p.062407-062407-4
Main Authors: Jang, Youngman, Bowden, S. R., Mascaro, Mark, Unguris, J., Ross, C. A.
Format: Article
Language:English
Subjects:
Cycles
Domain walls
Magnetic fields
Microscopy
Remanence
Simulation
Walls
Wire
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Summary:360°, 540°, and other complex transverse domain walls have been created in narrow cobalt wires connected to injection pads by cycling a magnetic field perpendicular to the wire length. The composite walls, formed by impingement of 180° transverse walls of alternating chirality, are stable over a wide field range. The structure of the walls observed at remanence by scanning electron microscopy with polarization analysis and by magnetic force microscopy is in good quantitative agreement with the prediction of micromagnetic simulations.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3681800