Characterization of the magnetic modification of Co/Pt multilayer films by He+, Ar+, and Ga+ ion irradiation

C. T. Rettner, S. Anders, J. E E Baglin, T. Thomson, B. D. Terris

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Co/Pt multilayers can exhibit large perpendicular anisotropies and coercivities that are very sensitive to the quality of the Co/Pt interfaces. We have characterized the dependence of coercivity of Co/Pt multilayers on irradiation with various ion species (He+, Ar+, and Ga+), energies (20 keV-2 MeV), and doses (1011-10 17ions/cm2), in order to understand better the nature of the structural changes responsible for the magnetic changes. We find that, in general, the system is much more sensitive to irradiation than expected on the basis of a nearest-neighbor coupling model and simple ballistic ion-beam mixing. © 2002 American Institute of Physics.
    Original languageEnglish
    Pages (from-to)279-281
    Number of pages2
    JournalApplied Physics Letters
    Volume80
    Issue number2
    DOIs
    Publication statusPublished - 14 Jan 2002

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