Enz, Thorsten ; Winterer, Markus ; Stahl, Branko ; Bhattacharya, Sarbari ; Miehe, Gerhard ; Foster, Keir ; Fasel, Claudia ; Hahn, Horst (2006)
Structure and magnetic properties of iron nanoparticles stabilized in carbon.
In: Journal of Applied Physics, 99 (4)
doi: 10.1063/1.2173185
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Nanoparticles composed of iron and carbon have been produced by chemical vapor synthesis. A detailed structural, electronic, and magnetic characterization has been performed by several methods. The atomic arrangement in the as-prepared particles is strongly affected and stabilized by excess carbon. Small clusters of different ferrous phases are the building blocks of the particles. Due to the in situ formation of a carbonaceous shell the particles are stable against oxidation at ambient conditions. The magnetic properties are influenced by the exceptionally small particle size. The particles exhibit superparamagnetic behavior with a blocking temperature of 30 K and the temperature dependence of the magnetization is governed by the finite size of the system
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2006 |
| Autor(en): | Enz, Thorsten ; Winterer, Markus ; Stahl, Branko ; Bhattacharya, Sarbari ; Miehe, Gerhard ; Foster, Keir ; Fasel, Claudia ; Hahn, Horst |
| Art des Eintrags: | Bibliographie |
| Titel: | Structure and magnetic properties of iron nanoparticles stabilized in carbon |
| Sprache: | Englisch |
| Publikationsjahr: | April 2006 |
| Verlag: | American Institute of Physics |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 99 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1063/1.2173185 |
| Kurzbeschreibung (Abstract): | Nanoparticles composed of iron and carbon have been produced by chemical vapor synthesis. A detailed structural, electronic, and magnetic characterization has been performed by several methods. The atomic arrangement in the as-prepared particles is strongly affected and stabilized by excess carbon. Small clusters of different ferrous phases are the building blocks of the particles. Due to the in situ formation of a carbonaceous shell the particles are stable against oxidation at ambient conditions. The magnetic properties are influenced by the exceptionally small particle size. The particles exhibit superparamagnetic behavior with a blocking temperature of 30 K and the temperature dependence of the magnetization is governed by the finite size of the system |
| Freie Schlagworte: | Fine-particle systems, nanocrystalline materials, Fe and its alloys, Metals and alloys, Magnetization curves, hysteresis, Barkhausen and related effects |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 20 Apr 2012 07:21 |
| Letzte Änderung: | 05 Mär 2013 10:00 |
| PPN: | |
| Sponsoren: | The authors gratefully acknowledge the financial support by the German Research Foundation and the DFG Center for Functional Nanostructures for individual research grant. |
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