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@ARTICLE{Almeida:189417,
      author       = {Almeida, Trevor P. and Kasama, Takeshi and Muxworthy,
                      Adrian R. and Williams, Wyn and Nagy, Lesleis and Hansen,
                      Thomas W. and Brown, Paul D. and Dunin-Borkowski, Rafal},
      title        = {{V}isualized effect of oxidation on magnetic recording
                      fidelity in pseudo-single-domain magnetite particles},
      journal      = {Nature Communications},
      volume       = {5},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2015-02584},
      pages        = {5154},
      year         = {2014},
      abstract     = {Magnetite (​Fe3O4) is an important magnetic mineral to
                      Earth scientists, as it carries the dominant magnetic
                      signature in rocks, and the understanding of its magnetic
                      recording fidelity provides a critical tool in the field of
                      palaeomagnetism. However, reliable interpretation of the
                      recording fidelity of ​Fe3O4 particles is greatly
                      diminished over time by progressive oxidation to less
                      magnetic iron oxides, such as maghemite (γ-Fe2O3), with
                      consequent alteration of remanent magnetization potentially
                      having important geological significance. Here we use the
                      complementary techniques of environmental transmission
                      electron microscopy and off-axis electron holography to
                      induce and visualize the effects of oxidation on the
                      magnetization of individual nanoscale ​Fe3O4 particles as
                      they transform towards γ-Fe2O3. Magnetic induction maps
                      demonstrate a change in both strength and direction of
                      remanent magnetization within ​Fe3O4 particles in the size
                      range dominant in rocks, confirming that oxidation can
                      modify the original stored magnetic information.},
      cin          = {PGI-5},
      ddc          = {500},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {42G - Peter Grünberg-Centre (PG-C) (POF2-42G41)},
      pid          = {G:(DE-HGF)POF2-42G41},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000343980700018},
      pubmed       = {pmid:25300366},
      doi          = {10.1038/ncomms6154},
      url          = {https://juser.fz-juelich.de/record/189417},
}