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Title: Two regimes of ionization-induced recovery in SrTiO3 under irradiation

Abstract

Irradiation of pre-damaged SrTiO3 with 2 MeV He, 1.2 MeV C, 5 MeV C and 12 MeV O ions reveals two regimes of ionization-induced recovery. For C and O ions, with electronic energy loss between 1.6 and 3 keV/nm, recovery cross-sections range from 0.27 to 0.38 nm2, and molecular dynamics confirms recovery related to ionization-induced thermal spikes via electron-phonon coupling. Lastly, at lower electronic energy losses, recovery cross-sections decrease to about 5.5 × 10-4 nm2 for 2 MeV He ions and 1.0 × 10-5 nm2 for 200 keV electrons, which suggests recovery associated with local electronic excitation processes.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [1]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1559652
Alternate Identifier(s):
OSTI ID: 1557924
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 173; Journal Issue: N/A; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Weber, William, Xue, Haizhou, Zarkadoula, Eva, and Zhang, Yanwen. Two regimes of ionization-induced recovery in SrTiO3 under irradiation. United States: N. p., 2019. Web. doi:10.1016/j.scriptamat.2019.08.013.
Weber, William, Xue, Haizhou, Zarkadoula, Eva, & Zhang, Yanwen. Two regimes of ionization-induced recovery in SrTiO3 under irradiation. United States. doi:10.1016/j.scriptamat.2019.08.013.
Weber, William, Xue, Haizhou, Zarkadoula, Eva, and Zhang, Yanwen. Sun . "Two regimes of ionization-induced recovery in SrTiO3 under irradiation". United States. doi:10.1016/j.scriptamat.2019.08.013. https://www.osti.gov/servlets/purl/1559652.
@article{osti_1559652,
title = {Two regimes of ionization-induced recovery in SrTiO3 under irradiation},
author = {Weber, William and Xue, Haizhou and Zarkadoula, Eva and Zhang, Yanwen},
abstractNote = {Irradiation of pre-damaged SrTiO3 with 2 MeV He, 1.2 MeV C, 5 MeV C and 12 MeV O ions reveals two regimes of ionization-induced recovery. For C and O ions, with electronic energy loss between 1.6 and 3 keV/nm, recovery cross-sections range from 0.27 to 0.38 nm2, and molecular dynamics confirms recovery related to ionization-induced thermal spikes via electron-phonon coupling. Lastly, at lower electronic energy losses, recovery cross-sections decrease to about 5.5 × 10-4 nm2 for 2 MeV He ions and 1.0 × 10-5 nm2 for 200 keV electrons, which suggests recovery associated with local electronic excitation processes.},
doi = {10.1016/j.scriptamat.2019.08.013},
journal = {Scripta Materialia},
number = N/A,
volume = 173,
place = {United States},
year = {2019},
month = {12}
}

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Works referencing / citing this record:

Molecular dynamics simulations of the response of pre-damaged SrTiO 3 and KTaO 3 to fast heavy ions
journal, January 2020

  • Zarkadoula, Eva; Zhang, Yanwen; Weber, William J.
  • AIP Advances, Vol. 10, Issue 1
  • DOI: 10.1063/1.5133061