Schmitt, H. ; Stahl, B. ; Ghafari, M. ; Hahn, Horst (2005)
Interface characterization in Pd-Fe-Al(oxide)-Fe systems using conversion electron mossbauer spectroscopy.
In: Journal of Applied Physics, 97 (11)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A Fe–Al(oxide)-bilayer was deposited on a thermally oxidized and Pd-buffered Si substrate. In order to elucidate the structural and magnetic properties of the insulators lower interface by Mössbauer spectroscopy, a thin math tracer was placed at the Al(oxide) interface. Conversion electron Mössbauer spectroscopy at room temperature and 30 K revealed the changes at the interface after Al deposition and its oxidation with molecular oxygen. This nuclear probe technique can resolve the different phases that appear during the different preparation steps. The magnetic hyperfine splitting and the isomer shift give information about the chemical, structural, and magnetic orders. This is important for an understanding of magnetoresistance in likewise composed tunneling magnetoresistance samples. A transmission electron microscopy image of a layered reference system Pd–Fe–Al2O3–Fe confirms the layered structure of the sample and the lower interface between Fe and Al (Al2O3).
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2005 |
| Autor(en): | Schmitt, H. ; Stahl, B. ; Ghafari, M. ; Hahn, Horst |
| Art des Eintrags: | Bibliographie |
| Titel: | Interface characterization in Pd-Fe-Al(oxide)-Fe systems using conversion electron mossbauer spectroscopy |
| Sprache: | Englisch |
| Publikationsjahr: | 2005 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 97 |
| (Heft-)Nummer: | 11 |
| Kurzbeschreibung (Abstract): | A Fe–Al(oxide)-bilayer was deposited on a thermally oxidized and Pd-buffered Si substrate. In order to elucidate the structural and magnetic properties of the insulators lower interface by Mössbauer spectroscopy, a thin math tracer was placed at the Al(oxide) interface. Conversion electron Mössbauer spectroscopy at room temperature and 30 K revealed the changes at the interface after Al deposition and its oxidation with molecular oxygen. This nuclear probe technique can resolve the different phases that appear during the different preparation steps. The magnetic hyperfine splitting and the isomer shift give information about the chemical, structural, and magnetic orders. This is important for an understanding of magnetoresistance in likewise composed tunneling magnetoresistance samples. A transmission electron microscopy image of a layered reference system Pd–Fe–Al2O3–Fe confirms the layered structure of the sample and the lower interface between Fe and Al (Al2O3). |
| Freie Schlagworte: | alumina, palladium, iron, magnetic multilayers, Mossbauer effect, oxidation, hyperfine interactions, tunnelling magnetoresistance, transmission electron microscopy, ferromagnetic materials, magnetic thin films |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien |
| Hinterlegungsdatum: | 20 Nov 2008 08:21 |
| Letzte Änderung: | 20 Feb 2020 13:24 |
| PPN: | |
| Sponsoren: | This work was funded in part by the Deutsche Forschungsgemeinschaft (DFG). |
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