Origin of Atomic Clusters during Ion Sputtering

Rehn, L. E.; Birtcher, R. C.; Donnelly, S. E.; Baldo, P. M.; Funk, L.

doi:10.1103/physrevlett.87.207601

Cited by 58 publications

(32 citation statements)

References 13 publications

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“…However, studies of heavy ion irradiation at lower energies ͑in the heat spike regime͒ have shown that heat spikes can lead to the emission of quite large atom clusters due to liquid flow, microexplosions, and corona formation. [604][605][606][607][608][609][610] The nanoparticle sputtering is likely explained by a similar effect arising from the swift heavy ion heat spikes.…”

Section: B Sputtering Of Nanoparticles By Swift Heavy Ionsmentioning

confidence: 99%

Ion and electron irradiation-induced effects in nanostructured materials

Krasheninnikov¹,

Nordlund²

2010

Journal of Applied Physics

944

591

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A common misconception is that the irradiation of solids with energetic electrons and ions has exclusively detrimental effects on the properties of target materials. In addition to the well-known cases of doping of bulk semiconductors and ion beam nitriding of steels, recent experiments show that irradiation can also have beneficial effects on nanostructured systems. Electron or ion beams may serve as tools to synthesize nanoclusters and nanowires, change their morphology in a controllable manner, and tailor their mechanical, electronic, and even magnetic properties. Harnessing irradiation as a tool for modifying material properties at the nanoscale requires having the full microscopic picture of defect production and annealing in nanotargets. In this article, we review recent progress in the understanding of effects of irradiation on various zero-dimensional and one-dimensional nanoscale systems, such as semiconductor and metal nanoclusters and nanowires, nanotubes, and fullerenes. We also consider the two-dimensional nanosystem graphene due to its similarity with carbon nanotubes. We dwell on both theoretical and experimental results and discuss at length not only the physics behind irradiation effects in nanostructures but also the technical applicability of irradiation for the engineering of nanosystems.

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Section: B Sputtering Of Nanoparticles By Swift Heavy Ionsmentioning

confidence: 99%

Ion and electron irradiation-induced effects in nanostructured materials

Krasheninnikov¹,

Nordlund²

2010

Journal of Applied Physics

944

591

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“…The use of such techniques has made important contributions to understanding in areas such as the effects of ion-induced collision cascades on extended defects [25] and surfaces [26], the effects of fluxes of point defects on precipitates in metals [27], nanocluster ejection [28,29] and the development of amorphous zones in silicon [30].…”

Section: Introductionmentioning

confidence: 99%

Dynamic microstructural evolution of graphite under displacing irradiation

Hinks

Haigh

Greaves

et al. 2014

Carbon

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“…This observation was quite surprising since the cluster binding energies are of the order of 1−2 eV, too small compared to the energies of the colliding ions. Since then there has been a lot of studies on the subject with an aim to understand the basic mechanisms behind cluster emission [2,3,4,5,6,7]. In most cases, involving low energy ion impact [2,3,4], the cluster yield, Y (n), as a function of number of constituent atoms, n, has been found to follow an inverse power law, Y (n) ∼ n −δ , δ being a decay exponent.…”

mentioning

confidence: 99%

“…For small clusters with very few atoms, detected using time-of-flight, δ has been found to lie between 4 and 8 [2]. However, using transmission electron microscopy (TEM), it has recently been possible to study the size distribution of large clusters, collected on catcher foils, placed suitably during ion irradiations [4,5].…”

mentioning

confidence: 99%

Observation of a Universal Aggregation Mechanism and a Possible Phase Transition in Au Sputtered by Swift Heavy Ions

et al. 2008

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Two exponents, δ, for size distribution of n-atom clusters, Y (n) ∼ n −δ , have been found in Au clusters sputtered from embedded Au nanoparticles under swift heavy ion irradiation. For small clusters, below 12.5 nm in size, δ has been found to be 3/2, which can be rationalized as occurring from a steady state aggregation process with size independent aggregation. For larger clusters, a δ value of 7/2 is suggested, which might come from a dynamical transition to another steady state where aggregation and evaporation rates are size dependent. In the present case, the observed decay exponents do not support any possibility of a thermodynamic liquid-gas type phase transition taking place, resulting in cluster formation.

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Origin of Atomic Clusters during Ion Sputtering

Cited by 58 publications

References 13 publications

Ion and electron irradiation-induced effects in nanostructured materials

Ion and electron irradiation-induced effects in nanostructured materials

Dynamic microstructural evolution of graphite under displacing irradiation

Observation of a Universal Aggregation Mechanism and a Possible Phase Transition in Au Sputtered by Swift Heavy Ions

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