Transmission Electron Microscopy and Molecular Dynamic Study of Ion Tracks in Nanocrystalline Y2Ti2O7: Particle Size Effect on Track Formation Threshold
Ibrayeva A. O’Connell J. Mutali A. Rymzhanov R. Skuratov V.
November 2023Multidisciplinary Digital Publishing Institute (MDPI)
Crystals
2023#13Issue 11
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 (<50 nm) isolated nanocrystals, with smaller crystals being significantly more sensitive to amorphous track formation.
latent tracks , molecular dynamics , nanoparticles , swift heavy ions , transmission electron microscopy
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Institute of Nuclear Physics, Ibragimov St. 1, Almaty, 050032, Kazakhstan
Centre for High Resolution Transmission Electron Microscopy, Nelson Mandela University, Building 124, Port Elizabeth, 6031, South Africa
Faculty of Physics and Technical Sciences, L.N. Gumilyov Eurasian National University, Satpayev St. 2, Astana, 010000, Kazakhstan
Flerov Laboratory of Nuclear Research, Joint Institute for Nuclear Research, Joliot-Curie St. 6, Dubna, 141980, Russian Federation
Institute of Nuclear Physics and Engineering, National Research Nuclear University MEPhI, Kashirskoe Shosse, 31, Moscow, 115409, Russian Federation
Department of Nuclear Physics, Dubna State University, Universitetskaya St., 19, Dubna, 141982, Russian Federation
Institute of Nuclear Physics
Centre for High Resolution Transmission Electron Microscopy
Faculty of Physics and Technical Sciences
Flerov Laboratory of Nuclear Research
Institute of Nuclear Physics and Engineering
Department of Nuclear Physics
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