Active participation of “inert” YSZ substrates on interface formation in Fe3 O4 /YSZ heterostructures

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2021
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Hamed, Mai Hussein
Mueller, David N.
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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1dybj8o0vqawz7
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https://doi.org/10.1016/j.apsadv.2021.100132
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Applied Surface Science Advances. Elsevier. 2021, 6, 100132. eISSN 2666-5239. Available under: doi: 10.1016/j.apsadv.2021.100132
Zusammenfassung

The bulk and emerging interface properties of magnetite Fe3O4 /YSZ(001) heterostructures grown by pulsed laser deposition are investigated. Fe3O4 thin films (4–38 nm) grow epitaxially in (111) orientation and undergo a Verwey transition at max. = 1170.6K. Surprisingly, the formation of interfacial Fe2O3 phase is observed albeit the quasi-inert properties of yttrium-stabilized zirconia (YSZ). Possible mechanisms include either (i) thermodynamically induced interfacial redox reaction at the YSZ substrate surfaces or (ii) oxygen diffusion from the outside atmosphere, as YSZ is a very good oxygen ion conductor. Hence, substrate-assisted oxygen supply may enable the control of emerging interface functionalities.

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530 Physik
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Verwey transition, HAXPES, YSZ, Redox reaction
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ISO 690HAMED, Mai Hussein, David N. MUELLER, Martina MÜLLER, 2021. Active participation of “inert” YSZ substrates on interface formation in Fe3 O4 /YSZ heterostructures. In: Applied Surface Science Advances. Elsevier. 2021, 6, 100132. eISSN 2666-5239. Available under: doi: 10.1016/j.apsadv.2021.100132
BibTex
@article{Hamed2021Activ-57397,
  year={2021},
  doi={10.1016/j.apsadv.2021.100132},
  title={Active participation of “inert” YSZ substrates on interface formation in Fe<sub>3</sub> O<sub>4</sub> /YSZ heterostructures},
  volume={6},
  journal={Applied Surface Science Advances},
  author={Hamed, Mai Hussein and Mueller, David N. and Müller, Martina},
  note={Article Number: 100132}
}
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    <dcterms:abstract xml:lang="eng">The bulk and emerging interface properties of magnetite Fe&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; /YSZ(001) heterostructures grown by pulsed laser deposition are investigated. Fe&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; thin films (4–38 nm) grow epitaxially in (111) orientation and undergo a Verwey transition at max.  =  1170.6K. Surprisingly, the formation of interfacial Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; phase is observed albeit the quasi-inert properties of yttrium-stabilized zirconia (YSZ). Possible mechanisms include either (i) thermodynamically induced interfacial redox reaction at the YSZ substrate surfaces or (ii) oxygen diffusion from the outside atmosphere, as YSZ is a very good oxygen ion conductor. Hence, substrate-assisted oxygen supply may enable the control of emerging interface functionalities.</dcterms:abstract>
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