Magnetoresistance, micromagnetism, and domain-wall scattering in epitaxial hcp Co films

U. Rödiger, J. Yu, L. Thomas, S. S.P. Parkin, A. D. Kent

    Research output: Contribution to journalArticlepeer-review


    Large negative magnetoresistance (MR) observed in transport measurements of hcp Co films with stripe domains were recently reported and interpreted in terms of domain-wall (DW) scattering mechanism. Here detailed MR measurements, magnetic force microscopy, and micromagnetic calculations are combined to elucidate the origin of MR in this material. The large negative room-temperature MR reported previously is shown to be due to ferromagnetic resistivity anisotropy. Measurements of the resistivity for currents parallel (CIW) and perpendicular to DW’s (CPW) have been conducted as a function of temperature. Low-temperature results show that any intrinsic effect of DW’s scattering on MR of this material is very small compared to the anisotropic MR.

    Original languageEnglish (US)
    Pages (from-to)11914-11918
    Number of pages5
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Issue number18
    StatePublished - 1999

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics


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