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    Enhancement in anomalous Hall resistivity of Co/Pd multilayer and CoPd alloy by Ga+ ion irradiation

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    Type
    Article
    Authors
    Guo, Zaibing
    Mi, Wenbo
    Li, Jingqi
    Cheng, Yingchun cc
    Zhang, Xixiang cc
    KAUST Department
    Core Labs
    Material Science and Engineering Program
    Nanofabrication Core Lab
    Physical Science and Engineering (PSE) Division
    Date
    2014-03-03
    Online Publication Date
    2014-03-03
    Print Publication Date
    2014-02-01
    Permanent link to this record
    http://hdl.handle.net/10754/563386
    
    Metadata
    Show full item record
    Abstract
    In this paper, we report the effect of Ga+ ion irradiation on anomalous Hall effect (AHE) and longitudinal resistivity (ρxx) in [Co(3 Å)/Pd(5 Å)]80 multilayer and Co 42Pd58 alloy. 4- and 2-fold increases in anomalous Hall resistivity (ρAH) in the Co/Pd multilayer and CoPd alloy have been observed after irradiations at doses of 2.4 × 1015 and 3.3×10 15 ions/cm2, respectively. Skew scattering and side jump contributions to AHE have been analyzed based on the scaling relationship ρAH = aρxx + bρ2xx. For the Co/Pd multilayer, AHE is mainly affected by ion irradiation-induced interface diffusion and defects. For the CoPd alloy, the increase in doses above 1.5 × 1015 ions/cm2 induces a sign change in skew scattering, followed by the skew scattering contribution to AHE overwhelming the side jump contribution, this phenomenon should be attributed to irradiation-induced defects and modifications in chemical ordering. © Copyright EPLA, 2014.
    Citation
    Guo, Z. B., Mi, W. B., Li, J. Q., Cheng, Y. C., & Zhang, X. X. (2014). Enhancement in anomalous Hall resistivity of Co/Pd multilayer and CoPd alloy by Ga + ion irradiation. EPL (Europhysics Letters), 105(4), 46005. doi:10.1209/0295-5075/105/46005
    Publisher
    IOP Publishing
    Journal
    EPL (Europhysics Letters)
    DOI
    10.1209/0295-5075/105/46005
    ae974a485f413a2113503eed53cd6c53
    10.1209/0295-5075/105/46005
    Scopus Count
    Collections
    Nanofabrication Core Lab; Articles; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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