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    Angular Magnetoresistance of Nanowires with Alternating Cobalt and Nickel Segments

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    Type
    Article
    Authors
    Mohammed, Hanan cc
    Corte-Leon, H.
    Ivanov, Yurii P. cc
    Moreno Garcia, Julian cc
    Kazakova, O.
    Kosel, Jürgen cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Materials Science and Engineering Program
    Date
    2017-06-22
    Permanent link to this record
    http://hdl.handle.net/10754/625529
    
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    Abstract
    Magnetization reversal in segmented Co/Ni nanowires with varying number of segments was studied using angular Magnetoresistance (MR) measurements on isolated nanowires. The MR measurements offer an insight into the pinning of domain walls within the nanowires. Angular MR measurements were performed on nanowires with two and multiple segments by varying the angle between the applied magnetic field and nanowire (−90° ≤θ≤90°). The angular MR measurements reveal that at lower values of θ the switching fields are nearly identical for the multisegmented and two-segmented nanowires, whereas at higher values of θ, a decrease in the switching field is observed in the case of two segmented nanowires. The two segmented nanowires generally exhibit a single domain wall pinning event, whereas an increased number of pinning events are characteristic of the multisegmented nanowires at higher values of θ. In-situ magnetic force microscopy substantiates reversal by domain wall nucleation and propagation in multisegmented nanowires.
    Citation
    Mohammed H, Corte-Leon H, Ivanov YP, Moreno JA, Kazakova O, et al. (2017) Angular Magnetoresistance of Nanowires with Alternating Cobalt and Nickel Segments. IEEE Transactions on Magnetics: 1–1. Available: http://dx.doi.org/10.1109/TMAG.2017.2718623.
    Sponsors
    This work was funded partly by King Abdullah University of Science and Technology and in part by EMRP and EMRP participating countries under Project EXL04 (SpinCal), and FP7 project NanoMag, and NanoMag (EMPIR).
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Transactions on Magnetics
    DOI
    10.1109/TMAG.2017.2718623
    Additional Links
    http://ieeexplore.ieee.org/document/7954991/
    ae974a485f413a2113503eed53cd6c53
    10.1109/TMAG.2017.2718623
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Material Science and Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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