Mechanism of electron-irradiation-induced recrystallization in Si

Frantz, J.; Tarus, J.; Nordlund, K.; Keinonen, J.

doi:10.1103/physrevb.64.125313

Cited by 36 publications

(32 citation statements)

References 16 publications

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“…Crystalline phases have lower internal energy as compared to amorphous configurations and therefore if the relative amount of elements approaches the stoichiometry of a stable phase, the likelihood of the restructuration process ending in the formation of a crystalline phase is high. In fact, this kind of athermal crystallization driven by the action of an electron beam has been extensively documented2021222324. Electron beams can also lead to limited heating.…”

Section: Discussionmentioning

confidence: 98%

In-situ Quasi-Instantaneous e-beam Driven Catalyst-Free Formation Of Crystalline Aluminum Borate Nanowires

González-Martínez

Gemming

Mendes

et al. 2016

Sci Rep

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The catalyst-assisted nucleation and growth mechanisms for many kinds of nanowires and nanotubes are pretty well understood. At times, though, 1D nanostructures form without a catalyst and the argued growth modes have inconsistencies. One such example is the catalyst-free growth of aluminium borate nanowires. Here we develop an in-situ catalyst-free room temperature growth route for aluminium nanowires using the electron beam in a transmission electron microscope. We provide strong experimental evidence that supports a formation process that can be viewed as a phase transition in which the generation of free-volume induced by the electron beam irradiation enhances the atomic mobility within the precursor material. The enhanced atomic mobility and specific features of the crystal structure of Al5BO9 drive the atomic rearrangement that results in the large scale formation of highly crystalline aluminium borate nanowires. The whole formation process can be completed within fractions of a second. Our developed growth mechanism might also be extended to describe the catalyst-free formation of other nanowires.

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Section: Discussionmentioning

confidence: 98%

In-situ Quasi-Instantaneous e-beam Driven Catalyst-Free Formation Of Crystalline Aluminum Borate Nanowires

González-Martínez

Gemming

Mendes

et al. 2016

Sci Rep

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“…One may stand out: femtosecond laser-induced damage, ablation and sputtering induced by femtosecond laser pulses, [12][13][14][15][16][17][18] amorphization and recrystallization by low-energy electron irradiation, 19,20 and other related physicochemical effects as radiation-enhanced diffusion and clustering, 21,22 and radiation-induced electrical degradation. 23 From the technological side electronic damage should have a relevant impact on the behavior of dielectric ͑window͒ materials in fusion reactor technologies.…”

Section: Introductionmentioning

confidence: 99%

Synergy between thermal spike and exciton decay mechanisms for ion damage and amorphization by electronic excitation

et al. 2006

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A theoretical model is proposed to account for the damage and amorphization induced in LiNbO 3 by ion bombardment in the electronic energy-loss regime. It relies on the synergy between the thermal spike generated by electron-phonon interaction and the nonradiative decay of localized ͑self-trapped͒ excitons. Calculations have been carried out to describe the effect of single impact as well as multiple impact ͑high fluence͒ irradiations. In the first case, the defect concentration profile and the radius of the amorphous tracks have been theoretically predicted and they are in good accordance with those experimentally determined. For high fluence irradiations ͑Ն10 13 cm −2 ͒ the model predicts the formation of homogeneous amorphous surface layers whose thickness increases with fluence. The propagation of the crystalline-amorphous boundary has been determined as a function of irradiation fluence. Theoretical predictions are also in good agreement with experimental data on Si-irradiated ͑7.5 and 5 MeV͒ LiNbO 3 outside the region of nuclear collision damage.

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“…This kind of energy transfer does not normally lead to atom displacements but may damage the target due to beam-stimulated local chemical reactions. [108][109][110][111] The cross sections of both nuclear and electron scattering decreases with increasing electron energy. Both electron and ion beams can be focused onto an area of several nanometers ͑and even down to 0.6 Å in some TEMs͒, which makes it possible to create defects in predetermined areas of the sample.…”

Section: A Production Of Defects In Bulk Targetsmentioning

confidence: 99%

Ion and electron irradiation-induced effects in nanostructured materials

Krasheninnikov¹,

Nordlund²

2010

Journal of Applied Physics

Self Cite

947

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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Mechanism of electron-irradiation-induced recrystallization in Si

Cited by 36 publications

References 16 publications

In-situ Quasi-Instantaneous e-beam Driven Catalyst-Free Formation Of Crystalline Aluminum Borate Nanowires

In-situ Quasi-Instantaneous e-beam Driven Catalyst-Free Formation Of Crystalline Aluminum Borate Nanowires

Synergy between thermal spike and exciton decay mechanisms for ion damage and amorphization by electronic excitation

Ion and electron irradiation-induced effects in nanostructured materials

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