Tunable Magnetic Phases at Fe3O4/SrTiO3 Oxide Interfaces

Kurzanzeige
dc.contributor.authorHamed, Mai Hussein
dc.contributor.authorHinz, Ronja Anika
dc.contributor.authorLömker, Patrick
dc.contributor.authorWilhelm, Marek
dc.contributor.authorGloskovskii, Andrei
dc.contributor.authorBencok, Peter
dc.contributor.authorSchmitz-Antoniak, Carolin
dc.contributor.authorElnaggar, Hebatalla
dc.contributor.authorSchneider, Claus M.
dc.contributor.authorMüller, Martina
dc.date.accessioned2021-05-07T07:39:57Z
dc.date.available2021-05-07T07:39:57Z
dc.date.issued2019-02-20eng
dc.description.abstractWe demonstrate the emergence and control of magnetic phases between magnetite (Fe3O4), a ferrimagnetic halfmetal, and SrTiO3, a transparent nonmagnetic insulator considered the bedrock of oxide-based electronics. The Verwey transition ( TV) was detected to persist from bulk-like down to ultrathin Fe3O4 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 Fe2+ ions with decreasing film thickness, accompanied by an increase of Fe3+ ions in both tetrahedral and octahedral sites and conclude on the formation of a magnetically active ferrimagnetic 2 u.c. γ-Fe2O3 intralayer. To manipulate the interfacial magnetic phase, a postannealing process causes the controlled reduction of the γ-Fe2O3 that finally leads to stoichiometric and ferrimagnetic Fe3O4/SrTiO3(001) heterointerfaces.eng
dc.description.versionpublishedeng
dc.identifier.doi10.1021/acsami.8b20625eng
dc.identifier.pmid30672270eng
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/53621
dc.language.isoengeng
dc.rightsterms-of-use
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/
dc.subjectVerwey transition, Magnetite, Fe3−δO4, spin moment, spintronics, heterointerfaceseng
dc.subject.ddc530eng
dc.titleTunable Magnetic Phases at Fe<sub>3</sub>O<sub>4</sub>/SrTiO<sub>3</sub> Oxide Interfaceseng
dc.typeJOURNAL_ARTICLEeng
dspace.entity.typePublication
kops.citation.bibtex
@article{Hamed2019-02-20Tunab-53621,
  year={2019},
  doi={10.1021/acsami.8b20625},
  title={Tunable Magnetic Phases at Fe<sub>3</sub>O<sub>4</sub>/SrTiO<sub>3</sub> Oxide Interfaces},
  number={7},
  volume={11},
  issn={1944-8244},
  journal={ACS Applied Materials & Interfaces},
  pages={7576--7583},
  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 Müller, Martina}
}
kops.citation.iso690HAMED, Mai Hussein, Ronja Anika HINZ, Patrick LÖMKER, Marek WILHELM, Andrei GLOSKOVSKII, Peter BENCOK, Carolin SCHMITZ-ANTONIAK, Hebatalla ELNAGGAR, Claus M. SCHNEIDER, Martina MÜLLER, 2019. Tunable Magnetic Phases at Fe3O4/SrTiO3 Oxide Interfaces. In: ACS Applied Materials & Interfaces. American Chemical Society (ACS). 2019, 11(7), pp. 7576-7583. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.8b20625deu
kops.citation.iso690HAMED, Mai Hussein, Ronja Anika HINZ, Patrick LÖMKER, Marek WILHELM, Andrei GLOSKOVSKII, Peter BENCOK, Carolin SCHMITZ-ANTONIAK, Hebatalla ELNAGGAR, Claus M. SCHNEIDER, Martina MÜLLER, 2019. Tunable Magnetic Phases at Fe3O4/SrTiO3 Oxide Interfaces. In: ACS Applied Materials & Interfaces. American Chemical Society (ACS). 2019, 11(7), pp. 7576-7583. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.8b20625eng
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kops.sourcefieldACS Applied Materials & Interfaces. American Chemical Society (ACS). 2019, <b>11</b>(7), pp. 7576-7583. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.8b20625deu
kops.sourcefield.plainACS Applied Materials & Interfaces. American Chemical Society (ACS). 2019, 11(7), pp. 7576-7583. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.8b20625deu
kops.sourcefield.plainACS Applied Materials & Interfaces. American Chemical Society (ACS). 2019, 11(7), pp. 7576-7583. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.8b20625eng
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