Merkel, D. G. ; Sajti, S. ; Fetzer, C. ; Major, J. ; Major, M. ; Rüffer, R. ; Rühm, A. ; Stankov, S. ; Tanczikó, F. ; Bottyán, L. (2024)
Isotope-periodic multilayer method for short self-diffusion paths – a comparative neutron and synchrotron Mössbauer reflectometric study of FePd alloys.
In: Journal of Physics: Conference Series, 2010, 211 (1)
doi: 10.26083/tuprints-00020657
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
FePt, FePd, CoPt, and CoPd in equilibrium exhibit the L1₀ structure with high perpendicular magnetic anisotropy making them attractive candidates for high-density magnetic recording. Magnetic properties of these films depend on the distribution and orientation of the L1₀ fraction controlled by diffusion on atomic scale. Epitaxial isotope-periodic natFePd/⁵⁷FePd alloy films were prepared by molecular beam epitaxy and heat treated at 500°C for various retention times. Isotope-sensitive non-destructive methods, neutron reflectometry and synchrotron Mössbauer reflectometry were applied to follow very short diffusion paths normal to the film plane. Squared diffusion lengths and diffusion profiles were obtained from the fitting of experimental reflectivity curves for each annealing treatment steps. The somewhat different diffusion lengths obtained for the neutron and synchrotronMössbauer reflectograms of the same samples are explained by the larger footprint of the sample in the neutron experiment for which interface inhomogeneities are to be averaged. Diffusion in the microscopically different local environments were modelled by piecewise constant diffusion coefficients in the regions identified as different species by conversion electron Mössbauer spectroscopy.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Merkel, D. G. ; Sajti, S. ; Fetzer, C. ; Major, J. ; Major, M. ; Rüffer, R. ; Rühm, A. ; Stankov, S. ; Tanczikó, F. ; Bottyán, L. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Isotope-periodic multilayer method for short self-diffusion paths – a comparative neutron and synchrotron Mössbauer reflectometric study of FePd alloys |
| Sprache: | Englisch |
| Publikationsjahr: | 12 Februar 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 1 Februar 2010 |
| Ort der Erstveröffentlichung: | Bristol |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physics: Conference Series |
| Jahrgang/Volume einer Zeitschrift: | 211 |
| (Heft-)Nummer: | 1 |
| Kollation: | 6 Seiten |
| DOI: | 10.26083/tuprints-00020657 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/20657 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | FePt, FePd, CoPt, and CoPd in equilibrium exhibit the L1₀ structure with high perpendicular magnetic anisotropy making them attractive candidates for high-density magnetic recording. Magnetic properties of these films depend on the distribution and orientation of the L1₀ fraction controlled by diffusion on atomic scale. Epitaxial isotope-periodic natFePd/⁵⁷FePd alloy films were prepared by molecular beam epitaxy and heat treated at 500°C for various retention times. Isotope-sensitive non-destructive methods, neutron reflectometry and synchrotron Mössbauer reflectometry were applied to follow very short diffusion paths normal to the film plane. Squared diffusion lengths and diffusion profiles were obtained from the fitting of experimental reflectivity curves for each annealing treatment steps. The somewhat different diffusion lengths obtained for the neutron and synchrotronMössbauer reflectograms of the same samples are explained by the larger footprint of the sample in the neutron experiment for which interface inhomogeneities are to be averaged. Diffusion in the microscopically different local environments were modelled by piecewise constant diffusion coefficients in the regions identified as different species by conversion electron Mössbauer spectroscopy. |
| ID-Nummer: | Artikel-ID: 012029 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-206576 |
| Zusätzliche Informationen: | Polarized Neutrons and Synchrotron X-rays for Magnetism Conference 2009 2–5 August 2009, Bonn, Germany |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| 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: | 12 Feb 2024 14:48 |
| Letzte Änderung: | 13 Feb 2024 07:28 |
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Verfügbare Versionen dieses Eintrags
- Isotope-periodic multilayer method for short self-diffusion paths – a comparative neutron and synchrotron Mössbauer reflectometric study of FePd alloys. (deposited 12 Feb 2024 14:48) [Gegenwärtig angezeigt]
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