Magnetoresistance due to domain walls in an epitaxial microfabricated Fe wire

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

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The domain wall (DW) contribution to magnetoresistance has been investigated using an epitaxial microfabricated bcc (110) Fe wires of 2 μm linewidth. A strong in-plane uniaxial component to the magnetic anisotropy perpendicular to the wire axis causes a regular stripe domain pattern with closure domains. The stripe domain width in zero-applied magnetic field is strongly affected by the magnetic history and can be continuously varied from 0.45 to 1.8 μm. This enables a measurement of the resistivity as a function of DW density in a single wire. Clear evidence is presented that the resistivity is reduced in the presence of DWs at low temperatures.

    Original languageEnglish (US)
    Pages (from-to)1298-1300
    Number of pages3
    JournalApplied Physics Letters
    Volume73
    Issue number9
    DOIs
    StatePublished - 1998

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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