Jarvi, T. T. ; Kuronen, A. ; Nordlund, K. ; Albe, K. (2009)
Damage production in nanoparticles under light ion irradiation.
In: Phys. Rev. B, 80 (13)
doi: 10.1103/PhysRevB.80.132101
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Modifying the properties of nanoparticles by ion irradiation leads to sputtering and defect production, possibly enhanced by the high surface-to-volume ratio of the irradiated objects. By molecular-dynamics simulations, we address the size dependence of platinum nanoparticles' response to light ion irradiation and show that in contrast to irradiation by heavier ions the sputtering yield does not depend on the particle size. In contrast, very high vacancy concentrations can be obtained in nanoparticles, the maximal concentration depending on the particle size. The evolution of vacancy concentration and sputtering upon irradiation are rationalized in terms of a kinetic model based on single knock-on events.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Jarvi, T. T. ; Kuronen, A. ; Nordlund, K. ; Albe, K. |
| Art des Eintrags: | Bibliographie |
| Titel: | Damage production in nanoparticles under light ion irradiation |
| Sprache: | Englisch |
| Publikationsjahr: | 6 Oktober 2009 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Phys. Rev. B |
| Jahrgang/Volume einer Zeitschrift: | 80 |
| (Heft-)Nummer: | 13 |
| DOI: | 10.1103/PhysRevB.80.132101 |
| URL / URN: | http://prb.aps.org/abstract/PRB/v80/i13/e132101 |
| Kurzbeschreibung (Abstract): | Modifying the properties of nanoparticles by ion irradiation leads to sputtering and defect production, possibly enhanced by the high surface-to-volume ratio of the irradiated objects. By molecular-dynamics simulations, we address the size dependence of platinum nanoparticles' response to light ion irradiation and show that in contrast to irradiation by heavier ions the sputtering yield does not depend on the particle size. In contrast, very high vacancy concentrations can be obtained in nanoparticles, the maximal concentration depending on the particle size. The evolution of vacancy concentration and sputtering upon irradiation are rationalized in terms of a kinetic model based on single knock-on events. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 28 Feb 2012 14:58 |
| Letzte Änderung: | 25 Apr 2016 08:45 |
| PPN: | |
| Sponsoren: | This work was done within the Finnish Centre of Excellence in Computational Molecular Science �CMS�, financed by the Academy of Finland and the University of Helsinki., We also gratefully acknowledge support within an exchange program from the Academy of Finland and the German Foreign Exchange Service �DAAD�, as well as the grants of computer time from CSC, the Finnish IT Center for Science. |
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