Witte, Ralf ; Kruk, Robert ; Molinari, Alan ; Wang, Di ; Schlabach, Sabine ; Brand, Richard A. ; Provenzano, Virgil ; Hahn, Horst (2016)
Epitaxial strain-engineered self-assembly of magnetic nanostructures in FeRh thin films.
In: Journal of Physics D: Applied Physics, 50 (2)
doi: 10.1088/1361-6463/50/2/025007
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this paper we introduce an innovative bottom-\up approach for engineering self-\assembled magnetic nanostructures using epitaxial strain-\induced twinning and phase separation. X-\ray diffraction, Fe-57 Mossbauer spectroscopy, scanning tunneling microscopy, and transmission electron microscopy show that epitaxial films of a near-\equiatomic FeRh alloy respond to the applied epitaxial strain by laterally splitting into two structural phases on the nanometer length scale. Most importantly, these two structural phases differ with respect to their magnetic properties, one being paramagnetic and the other ferromagnetic, thus leading to the formation of a patterned magnetic nanostructure. It is argued that the phase separation directly results from the different strain-\dependence of the total energy of the two competing phases. This straightforward relation directly enables further tailoring and optimization of the nanostructures' properties.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Witte, Ralf ; Kruk, Robert ; Molinari, Alan ; Wang, Di ; Schlabach, Sabine ; Brand, Richard A. ; Provenzano, Virgil ; Hahn, Horst |
| Art des Eintrags: | Bibliographie |
| Titel: | Epitaxial strain-engineered self-assembly of magnetic nanostructures in FeRh thin films |
| Sprache: | Englisch |
| Publikationsjahr: | 18 Januar 2016 |
| Verlag: | IOP Publishing, England |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physics D: Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 50 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1088/1361-6463/50/2/025007 |
| Kurzbeschreibung (Abstract): | In this paper we introduce an innovative bottom-\up approach for engineering self-\assembled magnetic nanostructures using epitaxial strain-\induced twinning and phase separation. X-\ray diffraction, Fe-57 Mossbauer spectroscopy, scanning tunneling microscopy, and transmission electron microscopy show that epitaxial films of a near-\equiatomic FeRh alloy respond to the applied epitaxial strain by laterally splitting into two structural phases on the nanometer length scale. Most importantly, these two structural phases differ with respect to their magnetic properties, one being paramagnetic and the other ferromagnetic, thus leading to the formation of a patterned magnetic nanostructure. It is argued that the phase separation directly results from the different strain-\dependence of the total energy of the two competing phases. This straightforward relation directly enables further tailoring and optimization of the nanostructures' properties. |
| Freie Schlagworte: | Magnetic nanostructure, self-assembly, strain-adaption, epitaxy, FeRh |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien |
| Hinterlegungsdatum: | 27 Jul 2017 08:55 |
| Letzte Änderung: | 10 Mär 2022 14:01 |
| PPN: | |
| Sponsoren: | The authors acknowledge funding by the Deutsche Forschungsgemeinschaft via HA1344/28-1. |
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