{
  "id": "1104.0139",
  "version": "v1",
  "published": "2011-04-01T10:53:33.000Z",
  "updated": "2011-04-01T10:53:33.000Z",
  "title": "Tuning the magnetic properties of Co nanoparticles by Pt capping",
  "authors": [
    "A. Ebbing",
    "O. Hellwig",
    "L. Agudo",
    "G. Eggeler",
    "O. Petracic"
  ],
  "journal": "Physical Review B 84, 012405 (2011)",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We show that by capping Co nanoparticles with small amounts of Pt strong changes of the magnetic properties can be induced. The Co nanoparticles have a mean diameter of 2.7 nm. From magnetometry measurements we find that for zero and for small amounts of Pt (nominal thickness t(Pt) < 0.7 nm) the nanoparticles behave superparamagnetic like. With increasing t(Pt) the blocking temperature is enhanced from 16 up to 108 K. Capping with Pd yields comparable results. However, for values t(Pt) > 1 nm a strongly coupled state is encountered resembling a ferromagnet with a T_c approx. 400 K",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-04-01T10:53:33.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "75.75.Fk",
      "81.16.Dn",
      "75.70.Cn"
    ],
    "keywords": [
      "magnetic properties",
      "nanoparticles",
      "pt capping",
      "small amounts",
      "pt strong changes"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "doi": "10.1103/PhysRevB.84.012405",
      "year": 2011,
      "month": "Jul",
      "volume": 84,
      "number": 1,
      "pages": "012405"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvB..84a2405E"
    }
  }
}