Szczegóły publikacji
Opis bibliograficzny
Morphology of $Fe/MgO(001)$ ultrathin films / Rüdiger Reitinger, Bogdan Sepiol, Gero Vogl, Bastian Pfau, Lorenz-Mathias Stadler, Svetoslav Stankov, Federico Zontone, Nika Spiridis, Józef KORECKI // Journal of Applied Physics ; ISSN 0021-8979. — 2007 — vol. 102 no. 3, s. 034310-1–034310-7. — Bibliogr. s. 034310-6–034310-7
Autorzy (9)
- Reitinger Rüdiger
- Sepiol Bogdan
- Vogl Gero W.
- Pfau Bastian
- Stadler Lorenz-Mathias
- Stankov Svetoslav
- Zontone Federico
- Spiridis Nika
- AGHKorecki Józef
Dane bibliometryczne
| ID BaDAP | 35402 |
|---|---|
| Data dodania do BaDAP | 2007-11-13 |
| Tekst źródłowy | URL |
| DOI | 10.1063/1.2760844 |
| Rok publikacji | 2007 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Applied Physics |
Abstract
The structural and magnetic properties of iron clusters resulting from the evaporation of five monolayers of iron on a polished MgO(001) substrate are examined by grazing-incidence small-angle x-ray scattering, and conversion electron Mossbauer spectroscopy. Volmer-Weber-growth. is observed for room-temperature deposition, giving rise to spherical, superparamagnetic islands. Subsequent annealing causes coarsening and the particles become hemispherical. In the early stages of annealing cluster diffusion takes place, whereas later, Ostwald ripening is the dominant coarsening mechanism. The diffusion coefficient is independent from the crystallographic directions in the MgO(001) surface as it is proven by the isotropic island distribution and shape. The superparamagnetic state of the particles is conserved during the whole annealing process. For ultrathin iron layers we show that, in contrast to bulk iron, the Curie temperature lies well below room temperature.
