Vortex Pinning Enhancement in Patterned MoGe Thin Films Coated with Permalloy

ORAL

Abstract

Resistivity measurements on permalloy (Py) coated MoGe thin films containing periodic hole arrays were carried out to study the effects of magnetic material filling the hole array. Thin films of MoGe were patterned via focused-ion-beam (FIB) milling to create pinning sites for the vortex lattice. A Py layer was deposited onto the hole array using magnetron sputtering. We investigate periodic hole arrays coated with magnetic material to determine the change in transport properties with varying magnetic fields. Samples with and without a Py coating were tested to determine the effect of magnetic material filling the hole array on the vortex lattice. Significant pinning enhancement was found in the Py coated samples.

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Authors

  • Michael Latimer

    • Northern Illinois University, Argonne National Laboratory

  • Zhili Xiao

    • Northern Illinois University, Argonne National Laboratory
    • Northern Illinois University, Argonne National Lab

  • Ralu Divan

    • Argonne National Laboratory
    • Center for Nanoscale Materials, Argonne National Laboratory

  • Il Woong Jung

    • Argonne National Laboratory

  • Wai-Kwong Kwok

    • Argonne National Laboratory
    • Argonne National Lab
    • Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA