Palakkal, Jasnamol P. ; Zeinar, Lukas ; Major, Marton ; Komissinskiy, Philipp ; Schneider, Thorsten ; Alff, Lambert (2020)
Thickness-dependent magnetism in epitaxial SrFeO3-δ thin films.
In: IEEE Transactions on Magnetics, 56
doi: 10.1109/TMAG.2020.3023372
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Strained oxygen-deficient perovskite SrFeO3-δ films have been epitaxially grown by pulsed laser deposition on SrTiO3 (001) substrates. Oxygen deficiency of the films in comparison with the stoichiometric perovskite SrFeO3 is manifested in the increased lattice parameter, c = 3.97 Å, the decreased mass density, ρ = 4.825 g cm-3, and the presence of Fe3+ cations. The SrFeO3-δ perovskite structure is monoclinically distorted with an increase of the film thickness, resulting in the reduction of the total magnetic moment. A wasp-waisted hysteresis loop and a negative exchange bias are observed for the 69 nm thick film due to the possible magnetic sublayers arising from a proper monoclinically distorted surface layer and a substrate-locked core layer.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Palakkal, Jasnamol P. ; Zeinar, Lukas ; Major, Marton ; Komissinskiy, Philipp ; Schneider, Thorsten ; Alff, Lambert |
| Art des Eintrags: | Bibliographie |
| Titel: | Thickness-dependent magnetism in epitaxial SrFeO3-δ thin films |
| Sprache: | Englisch |
| Publikationsjahr: | 10 September 2020 |
| Verlag: | Institute of Electrical and Electronics Engineers (IEEE) |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | IEEE Transactions on Magnetics |
| Jahrgang/Volume einer Zeitschrift: | 56 |
| DOI: | 10.1109/TMAG.2020.3023372 |
| Kurzbeschreibung (Abstract): | Strained oxygen-deficient perovskite SrFeO3-δ films have been epitaxially grown by pulsed laser deposition on SrTiO3 (001) substrates. Oxygen deficiency of the films in comparison with the stoichiometric perovskite SrFeO3 is manifested in the increased lattice parameter, c = 3.97 Å, the decreased mass density, ρ = 4.825 g cm-3, and the presence of Fe3+ cations. The SrFeO3-δ perovskite structure is monoclinically distorted with an increase of the film thickness, resulting in the reduction of the total magnetic moment. A wasp-waisted hysteresis loop and a negative exchange bias are observed for the 69 nm thick film due to the possible magnetic sublayers arising from a proper monoclinically distorted surface layer and a substrate-locked core layer. |
| Freie Schlagworte: | Exchange bias, Magnetic materials, Oxides, Thin films |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten |
| Hinterlegungsdatum: | 20 Nov 2020 11:50 |
| Letzte Änderung: | 20 Nov 2020 11:50 |
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