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@ARTICLE{Hamed:421193,
      author       = {Hamed, Mai Hussein and Hinz, Ronja Anika and Lömker,
                      Patrick and Wilhelm, Marek and Gloskovskii, Andrei and
                      Bencok, Peter and Schmitz-Antoniak, Carolin and Elnaggar,
                      Hebatalla and Schneider, Claus M. and Mueller, Martina},
      title        = {{T}unable {M}agnetic {P}hases at
                      $\mathrm{{F}e_{3}{O}_{4}/{S}r{T}i{O}_{3}}$ {O}xide
                      {I}nterfaces},
      journal      = {ACS applied materials $\&$ interfaces},
      volume       = {11},
      number       = {7},
      issn         = {1944-8252},
      address      = {Washington, DC},
      publisher    = {ACS},
      reportid     = {PUBDB-2019-01899},
      pages        = {7576 - 7583},
      year         = {2019},
      note         = {© American Chemical Society; Post referee fulltext in
                      progress 2; Embargo 12 months from publication},
      abstract     = {We demonstrate the emergence and control of magnetic phases
                      between magnetite (Fe$_3$O$_4$), a ferrimagnetic halfmetal,
                      and SrTiO$_3$, a transparent nonmagnetic insulator
                      considered the bedrock of oxide-based electronics. The
                      Verwey transition (T$_V$) was detected to persist from
                      bulk-like down to ultrathin Fe$_3$O$_4$ films, decreasing
                      from 117 ± 4 K (38 nm) to 25 ± 4 K (2 nm), respectively.
                      Element-selective electronic and magnetic properties of the
                      ultrathin films and buried interfaces are studied by
                      angle-dependent hard X-ray photoelectron spectroscopy and
                      X-ray magnetic circular dichroism techniques. We observe a
                      reduction of Fe$^{2+}$ ions with decreasing film thickness,
                      accompanied by an increase of Fe$^{3+}$ ions in both
                      tetrahedral and octahedral sites and conclude on the
                      formation of a magnetically active ferrimagnetic 2 u.c.
                      γ-Fe$_2$O$_3$ intralayer. To manipulate the interfacial
                      magnetic phase, a postannealing process causes the
                      controlled reduction of the γ-Fe$_2$O$_3$ that finally
                      leads to stoichiometric and ferrimagnetic
                      Fe$_3$O$_4$/SrTiO$_3$(001) heterointerfaces.},
      cin          = {DOOR / FS-PEX},
      ddc          = {600},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-PEX-20130206},
      pnm          = {6212 - Quantum Condensed Matter: Magnetism,
                      Superconductivity (POF3-621) / 6G3 - PETRA III (POF3-622)},
      pid          = {G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6G3},
      experiment   = {EXP:(DE-H253)P-P09-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:30672270},
      UT           = {WOS:000459642200097},
      doi          = {10.1021/acsami.8b20625},
      url          = {https://bib-pubdb1.desy.de/record/421193},
}