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Berlin 2015 – scientific programme

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DS: Fachverband Dünne Schichten

DS 36: Poster Session I

DS 36.56: Poster

Thursday, March 19, 2015, 09:30–12:00, Poster A

Structural characterisation of epitaxial thin magnetite films grown on SrTiO3(001) — •Wanja Spiess, Olga Schuckmann, Tobias Schemme, Karsten Küpper, and Joachim Wollschläger — Physics Department, Osnabrück University, Germany

Magnetite is a promising material for various physical and chemical applications in different fields as spintronics [1] and catalysis [2]. It has been demonstrated that the electronic and magnetic properties of Fe3O4 films could be influenced by the difference of the strain, stoichiometry or defect states, e.g., using SrTiO3(001) as substrate [3,4].
In this study structural properties of ultrathin magnetite films grown on SrTiO3(001) were investigated. The films were deposited at different temperatures on single crystalline niobium doped SrTiO3(100) substrates by reactive molecular beam epitaxy (RMBE, Fe evaporation in O2 atmosphere). The surface stoichiometry and structure of the oxide films was controlled by x-ray photoelectron spectroscopy (XPS) and by low energy electron diffraction (LEED). The film structure was characterized by synchrotron radiation x-ray diffraction (XRD) during growth, showing that the strain of the films is strongly affected by the substrate temperature.
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