Effects of Post-deposition Annealing on Epitaxial CoO/Fe3O4 Bilayers on SrTiO3(001) and Formation of Thin High-Quality Cobalt Ferrite-like Films
DC Element | Wert | Sprache |
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dc.contributor.author | Thien, Jannis | |
dc.contributor.author | Bahlmann, Jascha | |
dc.contributor.author | Alexander, Andreas | |
dc.contributor.author | Hoppe, Martin | |
dc.contributor.author | Pohlmann, Tobias | |
dc.contributor.author | Ruwisch, Kevin | |
dc.contributor.author | Meyer, Carola | |
dc.contributor.author | Bertram, Florian | |
dc.contributor.author | Kuepper, Karsten | |
dc.contributor.author | Wollschlaeger, Joachim | |
dc.date.accessioned | 2021-12-23T16:13:43Z | - |
dc.date.available | 2021-12-23T16:13:43Z | - |
dc.date.issued | 2020 | |
dc.identifier.issn | 19327447 | |
dc.identifier.uri | https://osnascholar.ub.uni-osnabrueck.de/handle/unios/10711 | - |
dc.description.abstract | In order to explore an alternative pathway to prepare ultrathin CoFe2O4 films, epitaxial CoO/Fe3O4 bilayers with varying film thickness of the CoO film were grown on Nb-doped SrTiO3(001) substrates via reactive molecular beam epitaxy. Thereafter, cobalt ferrite films with varying stoichiometry were prepared by post-deposition annealing at different temperatures. The thermally mediated interdiffusion resulted in the formation of vertical compressive and lateral tensile strained CoxFe3-xO4 films (x = 0.6 - 1.4) with homogeneous distribution of Fe and Co cations for each film. The chemical and electronic variations after each annealing step were studied by means of soft and hard X-ray photoelectron spectroscopy. The homogeneity of the cation distributions in the films were additionally verified after the last annealing step by angle-resolved hard X-ray photoelectron spectroscopy. For the cobalt ferrite film with x = 1.4, an additional crystallographic phase of Co1-yFeyO was observed by (grazing incidence) X-ray diffraction measurements after annealing at 600 degrees C. X-ray reflectivity measurements were performed to determine the film thickness of the formed CoxFe3-xO4 films. | |
dc.description.sponsorship | Deutsche Forschungsgemeinschaft (DFG)German Research Foundation (DFG) [KU2321/6-1, WO533/20-1]; The PDA, soft XPS, HAXPES, XRR, XRD, and GIXRD experiments were performed on the beamline BM25-SpLine at the European Synchrotron Radiation Facility (ESRF), Grenoble, France. We are grateful to J. Rubio-Zuazo and G. Castro at the ESRF for providing assistance in using the beamline BM25-SpLine. We also acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Parts of this research were carried out at PETRA III, and we would like to thank A. Gloskovskii and C. Schluter for their excellent support during the beamtime. Furthermore, financial support from the Deutsche Forschungsgemeinschaft (DFG, grant nos. KU2321/6-1 and WO533/20-1) is acknowledged. | |
dc.language.iso | en | |
dc.publisher | AMER CHEMICAL SOC | |
dc.relation.ispartof | JOURNAL OF PHYSICAL CHEMISTRY C | |
dc.subject | BEAMLINE | |
dc.subject | Chemistry | |
dc.subject | Chemistry, Physical | |
dc.subject | COFE2O4 | |
dc.subject | IRON-OXIDE FILMS | |
dc.subject | Materials Science | |
dc.subject | Materials Science, Multidisciplinary | |
dc.subject | NANOPARTICLES | |
dc.subject | Nanoscience & Nanotechnology | |
dc.subject | OXIDATION | |
dc.subject | OXYGEN REDUCTION | |
dc.subject | PHOTOEMISSION | |
dc.subject | Science & Technology - Other Topics | |
dc.subject | SPECTRA | |
dc.subject | SPECTROSCOPY | |
dc.subject | X-RAY PHOTOELECTRON | |
dc.title | Effects of Post-deposition Annealing on Epitaxial CoO/Fe3O4 Bilayers on SrTiO3(001) and Formation of Thin High-Quality Cobalt Ferrite-like Films | |
dc.type | journal article | |
dc.identifier.doi | 10.1021/acs.jpcc.0c05503 | |
dc.identifier.isi | ISI:000587720300048 | |
dc.description.volume | 124 | |
dc.description.issue | 43 | |
dc.description.startpage | 23895 | |
dc.description.endpage | 23904 | |
dc.contributor.orcid | 0000-0003-0851-2767 | |
dc.contributor.orcid | 0000-0001-9304-3015 | |
dc.contributor.researcherid | I-1723-2012 | |
dc.identifier.eissn | 19327455 | |
dc.publisher.place | 1155 16TH ST, NW, WASHINGTON, DC 20036 USA | |
dcterms.isPartOf.abbreviation | J. Phys. Chem. C | |
crisitem.author.dept | FB 04 - Physik | - |
crisitem.author.dept | Universität Osnabrück | - |
crisitem.author.dept | FB 04 - Physik | - |
crisitem.author.dept | FB 04 - Physik | - |
crisitem.author.deptid | fb04 | - |
crisitem.author.deptid | fb04 | - |
crisitem.author.deptid | fb04 | - |
crisitem.author.orcid | 0000-0003-0851-2767 | - |
crisitem.author.orcid | 0000-0001-9002-4118 | - |
crisitem.author.orcid | 0000-0002-3043-3718 | - |
crisitem.author.parentorg | Universität Osnabrück | - |
crisitem.author.parentorg | Universität Osnabrück | - |
crisitem.author.parentorg | Universität Osnabrück | - |
crisitem.author.netid | MeCa197 | - |
crisitem.author.netid | BeFl001 | - |
crisitem.author.netid | KuKa120 | - |
crisitem.author.netid | WoJo788 | - |
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