{
  "id": "1510.07059",
  "version": "v1",
  "published": "2015-10-23T20:37:48.000Z",
  "updated": "2015-10-23T20:37:48.000Z",
  "title": "Mapping the domain wall pinning landscape in ferromagnetic films",
  "authors": [
    "Robert Badea",
    "Jesse Berezovsky"
  ],
  "comment": "12 pages, 4 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The propagation of domain walls in a ferromagnetic film is largely determined by domain wall pinning at defects in the material. In this letter we map the effective potential landscape for domain wall pinning in Permalloy films by raster scanning a single ferromagnetic vortex domain and monitoring the hysteretic vortex displacement vs. applied magnetic field. The measurement is carried out using a differential magneto-optical microscopy technique which yields spatial sensitivity $\\sim 10$ nm. We present a simple algorithm for extracting an effective pinning potential from the measurement of vortex displacement vs. applied field. The resulting maps of the pinning potential reveal distinct types of pinning sites, which we attribute to zero-, one-, and two-dimensional defects in the Permalloy film.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-10-23T20:37:48.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "domain wall pinning landscape",
      "ferromagnetic film",
      "permalloy film",
      "pinning potential reveal distinct types",
      "vortex displacement"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}