@article{Fraune2000depen-9374,
  year={2000},
  doi={10.1063/1.1330752},
  title={Size dependence of the exchange bias field in NiO/Ni nanostructures},
  number={23},
  volume={77},
  journal={Applied Physics Letters},
  pages={3815--3817},
  author={Fraune, Michael and Rüdiger, Ulrich and Güntherodt, Gernot and Cardoso, Susana and Freitas, Paulo}
}

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    <dc:contributor>Freitas, Paulo</dc:contributor>
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    <dcterms:bibliographicCitation>First publ. in: Applied Physics Letters 77 (2000), 23, pp. 3815-3817</dcterms:bibliographicCitation>
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    <dc:contributor>Rüdiger, Ulrich</dc:contributor>
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    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:55:58Z</dc:date>
    <dcterms:title>Size dependence of the exchange bias field in NiO/Ni nanostructures</dcterms:title>
    <dc:creator>Freitas, Paulo</dc:creator>
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    <dcterms:abstract xml:lang="eng">NiO/Ni wires have been investigated as a function of their width in order to investigate the size dependence of exchange bias. The samples have been prepared by e-beam lithography and ion milling of ion beam sputtered thin films. For NiO/Ni wires narrower than 3 µm, the exchange bias field significantly depends on the wire width. A NiO/Ni film shows an exchange bias field of  78 Oe whereas the exchange bias field of wires narrower than 200 nm is reduced to approximately  40 Oe. The coercive field of the NiO/Ni film is 28 Oe and increases to 210 Oe for the narrowest wires. The decrease of the exchange bias field for the narrowest wires is consistent with a recent microscopic model of exchange bias where the appearance of a unidirectional anisotropy in ferromagnet/antiferromagnet bilayers has been attributed to the presence of antiferromagnetic domains in the bulk of the antiferromagnet. A possible onset of a transition from a multidomain to a single-domain state of the antiferromagnet as a function of the NiO/Ni wire width seems to be the origin for the observed decrease of the exchange bias field for narrow wires.</dcterms:abstract>
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    <dc:contributor>Fraune, Michael</dc:contributor>
    <dc:creator>Fraune, Michael</dc:creator>
    <dc:creator>Rüdiger, Ulrich</dc:creator>
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