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    A detailed study of magnetization reversal in individual Ni nanowires

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    Type
    Article
    Authors
    Vidal, Enrique Vilanova
    Ivanov, Yurii P. cc
    Mohammed, Hanan cc
    Kosel, Jürgen cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Sensing, Magnetism and Microsystems Lab
    Date
    2015-01-19
    Permanent link to this record
    http://hdl.handle.net/10754/346748
    
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    Abstract
    Magnetic nanowires have emerged as essential components for a broad range of applications. In many cases, a key property of these components is the switching field, which is studied as a function of the angle between the field and the nanowire. We found remarkable differences of up to 100% between the switching fields of different nanowires from the same fabrication batch. Our experimental results and micromagnetic simulations indicate that the nanowires exhibit a single domain behavior and that the switching mechanism includes vortex domain wall motion across the nanowire. The differences between the switching fields are attributed to different cross-sections of the nanowires, as found by electron microscopy. While a circular cross-section yields the smallest switching field values, any deviation from this shape results in an increase of the switching field. The shape of the nanowires' cross-sections is thus a critical parameter that has not been previously taken into account.
    Citation
    A detailed study of magnetization reversal in individual Ni nanowires 2015, 106 (3):032403 Applied Physics Letters
    Publisher
    AIP Publishing
    Journal
    Applied Physics Letters
    DOI
    10.1063/1.4906108
    Additional Links
    http://scitation.aip.org/content/aip/journal/apl/106/3/10.1063/1.4906108
    ae974a485f413a2113503eed53cd6c53
    10.1063/1.4906108
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Sensing, Magnetism and Microsystems Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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