Two regimes of ionization-induced recovery in SrTiO3 under irradiation

doi:10.1016/j.scriptamat.2019.08.013

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:

^[1]; Xue, Haizhou ^[2];

^[1];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States)

Publication Date:: 2019-12-01

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.

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                    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.

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                    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.

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@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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DOI: 10.1016/j.scriptamat.2019.08.013

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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

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

Abstract

Citation Formats

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

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

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