Molecular dynamics simulations of the response of pre-damaged SrTiO3 and KTaO3 to fast heavy ions
Abstract
We investigate the energy dissipation and track formation due to ion irradiation in SrTiO3 and KTaO3. We use molecular dynamics simulations combined with the inelastic thermal spike model to simulate 21 MeV Ni ion irradiation in pristine and predamaged samples. The results are validated against experimental findings, showing that the level of initial disorder affects the electron-phonon interactions and the energy dissipation and deposition to the atoms. It is predicted that the ion track size increases linearly for low disorder levels, while its size saturates for high levels of disorder.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division; Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1606842
- Alternate Identifier(s):
- OSTI ID: 1581844
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- AIP Advances
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2158-3226
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Molecular dynamics; Materials analysis; Ion beam analysis; Computational physics
Citation Formats
Zarkadoula, Eva, Zhang, Yanwen, and Weber, William J. Molecular dynamics simulations of the response of pre-damaged SrTiO3 and KTaO3 to fast heavy ions. United States: N. p., 2020.
Web. doi:10.1063/1.5133061.
Zarkadoula, Eva, Zhang, Yanwen, & Weber, William J. Molecular dynamics simulations of the response of pre-damaged SrTiO3 and KTaO3 to fast heavy ions. United States. https://doi.org/10.1063/1.5133061
Zarkadoula, Eva, Zhang, Yanwen, and Weber, William J. Thu .
"Molecular dynamics simulations of the response of pre-damaged SrTiO3 and KTaO3 to fast heavy ions". United States. https://doi.org/10.1063/1.5133061. https://www.osti.gov/servlets/purl/1606842.
@article{osti_1606842,
title = {Molecular dynamics simulations of the response of pre-damaged SrTiO3 and KTaO3 to fast heavy ions},
author = {Zarkadoula, Eva and Zhang, Yanwen and Weber, William J.},
abstractNote = {We investigate the energy dissipation and track formation due to ion irradiation in SrTiO3 and KTaO3. We use molecular dynamics simulations combined with the inelastic thermal spike model to simulate 21 MeV Ni ion irradiation in pristine and predamaged samples. The results are validated against experimental findings, showing that the level of initial disorder affects the electron-phonon interactions and the energy dissipation and deposition to the atoms. It is predicted that the ion track size increases linearly for low disorder levels, while its size saturates for high levels of disorder.},
doi = {10.1063/1.5133061},
journal = {AIP Advances},
number = 1,
volume = 10,
place = {United States},
year = {Thu Jan 09 00:00:00 EST 2020},
month = {Thu Jan 09 00:00:00 EST 2020}
}
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