- AutorIn
- Martin Welke
- Kerstin Brachwitz
- Michael Lorenz
- Marius Grundmann
- Karl-Michael Schindler
- Angelika Chassé
- Reinhard Denecke
- Titel
- Structure and cation distribution of (Mn0.5Zn0.5)Fe2O4 thin films on SrTiO3(001)
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:15-qucosa2-235515
- Quellenangabe
- Journal of Applied Physics Erscheinungsort: Melville
Verlag: American Institute of Physics
Erscheinungsjahr: 2017
Jahrgang: 121
Heft: 22
ISSN: 0021-8979
E-ISSN: 1089-7550
Artikelnummer: 225305 - Erstveröffentlichung
- 2017
- Abstract (EN)
- A comprehensive study on growth of ferrimagnetic manganese zinc ferrite (Mn0.5Zn0.5Fe2O4) films on single crystalline strontium titanate(001) (SrTiO3) substrates was carried out. Under the optimized conditions, a thin film with a layer thickness of 200 nm was deposited, and the structural properties were investigated. Contrary to data published in literature, no buffer layer was necessary to achieve epitaxial growth of a poorly lattice-matched layer. This was confirmed for Mn0.5Zn0.5Fe2O4(001) on SrTiO3(001) by x-ray diffraction and the adjoined phi scans, which also revealed a lattice compression of 1.2% of the manganese zinc ferrite film in the out-of-plane direction. Using x-ray photoelectron spectroscopy, the near surface stoichiometry of the film could be shown to agree with the intended one within the uncertainty of the method. X-ray absorption spectroscopy showed an electronic structure close to that published for bulk samples. Additional x-ray magnetic circular dichroism investigations were performed to answer detailed structural questions by a comparison of experimental data with the calculated ones. The calculations took into account ion sites (tetrahedral vs. octahedral coordination) as well as the charge of Fe ions (Fe2+ vs. Fe3+). Contrary to the expectation for a perfect normal spinel that only Fe3þ ions are present in octahedral sites, hints regarding the presence of additional Fe2+ in octahedral sites as well as Fe3+ ions in tetrahedral sites have been obtained. Altogether, the layer could be shown to be mostly in a normal spinel configuration.
- Andere Ausgabe
- Link zur Originalpublikation in Journal of Applied Physics
Link: http://dx.doi.org/10.1063/1.4985175 - Freie Schlagwörter (EN)
- Iron group ions, Lattice constants, X-ray diffraction, Zinc, X-ray absorption
- Klassifikation (DDC)
- 530
- Verlag
- American Institute of Physics, Melville
- Publizierende Institution
- Universität Leipzig, Leipzig
- Martin-Luther-Universität Halle-Wittenberg, Halle-Wittenberg
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:15-qucosa2-235515
- Veröffentlichungsdatum Qucosa
- 06.08.2018
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch