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

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

    Research output: Contribution to journalArticle

    Abstract

    Large negative magnetoresistance (MR) observed in transport measurements of hep 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
    Volume59
    Issue number18
    StatePublished - May 1 1999

    Fingerprint

    Domain walls
    Magnetoresistance
    domain wall
    Scattering
    scattering
    electrical resistivity
    magnetic force microscopy
    Enhanced magnetoresistance
    Magnetic force microscopy
    anisotropy
    Temperature
    room temperature
    Anisotropy
    temperature

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Rüdiger, U., Yu, J., Thomas, L., Parkin, S. S. P., & Kent, A. D. (1999). Magnetoresistance, micromagnetism, and domain-wall scattering in epitaxial hcp Co films. Physical Review B - Condensed Matter and Materials Physics, 59(18), 11914-11918.

    Magnetoresistance, micromagnetism, and domain-wall scattering in epitaxial hcp Co films. / Rüdiger, U.; Yu, J.; Thomas, L.; Parkin, S. S P; Kent, A. D.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 59, No. 18, 01.05.1999, p. 11914-11918.

    Research output: Contribution to journalArticle

    Rüdiger, U, Yu, J, Thomas, L, Parkin, SSP & Kent, AD 1999, 'Magnetoresistance, micromagnetism, and domain-wall scattering in epitaxial hcp Co films', Physical Review B - Condensed Matter and Materials Physics, vol. 59, no. 18, pp. 11914-11918.
    Rüdiger, U. ; Yu, J. ; Thomas, L. ; Parkin, S. S P ; Kent, A. D. / Magnetoresistance, micromagnetism, and domain-wall scattering in epitaxial hcp Co films. In: Physical Review B - Condensed Matter and Materials Physics. 1999 ; Vol. 59, No. 18. pp. 11914-11918.
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