Transmission Electron Microscopy and Molecular Dynamic Study of Ion Tracks in Nanocrystalline Y2Ti2O7: Particle Size Effect on Track Formation Threshold

Structural effects in nanocrystalline pyrochlore Y2Ti2O7 induced by high energy heavy ions in a wide range of electronic stopping powers were studied by means of high-resolution transmission electron microscopy and molecular dynamics simulation considering the grain size effect. Ion track radii tend...

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Bibliographic Details
Published in:Crystals (Basel) 2023-11, Vol.13 (11), p.1534
Main Authors: Ibrayeva, Anel, O’Connell, Jacques, Mutali, Alisher, Rymzhanov, Ruslan, Skuratov, Vladimir
Format: Article
Language:English
Subjects:
Atoms & subatomic particles
Boundary conditions
Crystals
Electrons
Energy
Grain boundaries
Grain size
Heavy ions
High resolution electron microscopy
latent tracks
Molecular dynamics
Morphology
Nanoclusters
Nanocrystals
Nanoparticles
Nitrates
Particle size
Radiation
Simulation
Size effects
swift heavy ions
Transmission electron microscopy
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Summary:Structural effects in nanocrystalline pyrochlore Y2Ti2O7 induced by high energy heavy ions in a wide range of electronic stopping powers were studied by means of high-resolution transmission electron microscopy and molecular dynamics simulation considering the grain size effect. Ion track radii tend to saturate and even decrease at high electron stopping powers (>30 keV/nm) due to the velocity effect. The threshold electronic energy loss to form amorphous tracks in nanoclusters and large (>100 nm) crystals was estimated in the range 10.7–12.8 keV/nm. A strong size dependence was observed for smaller (
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst13111534