Two regimes of ionization-induced recovery in SrTiO3 under irradiation

William J. Weber; Haizhou Xue; Eva Zarkadoula; Yanwen Zhang

doi:10.1016/j.scriptamat.2019.08.013

Two regimes of ionization-induced recovery in SrTiO₃ under irradiation

William J. Weber
, Haizhou Xue
, Eva Zarkadoula
, Yanwen Zhang

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

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. 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.

Original language	English
Pages (from-to)	154-157
Number of pages	4
Journal	Scripta Materialia
Volume	173
DOIs	https://doi.org/10.1016/j.scriptamat.2019.08.013
State	Published - Dec 2019
Externally published	Yes

Keywords

Defects
Molecular dynamics
Perovskite
Recovery
Rutherford backscattering spectrometry/channeling (RBS)

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10.1016/j.scriptamat.2019.08.013

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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. 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.",

keywords = "Defects, Molecular dynamics, Perovskite, Recovery, Rutherford backscattering spectrometry/channeling (RBS)",

author = "Weber, \{William J.\} and Haizhou Xue and Eva Zarkadoula and Yanwen Zhang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = dec,

doi = "10.1016/j.scriptamat.2019.08.013",

language = "English",

volume = "173",

pages = "154--157",

journal = "Scripta Materialia",

issn = "1359-6462",

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}

TY - JOUR

T1 - Two regimes of ionization-induced recovery in SrTiO3 under irradiation

AU - Weber, William J.

AU - Xue, Haizhou

AU - Zarkadoula, Eva

AU - Zhang, Yanwen

PY - 2019/12

Y1 - 2019/12

N2 - 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. 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.

AB - 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. 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.

KW - Defects

KW - Molecular dynamics

KW - Perovskite

KW - Recovery

KW - Rutherford backscattering spectrometry/channeling (RBS)

UR - https://www.scopus.com/pages/publications/85070903585

U2 - 10.1016/j.scriptamat.2019.08.013

DO - 10.1016/j.scriptamat.2019.08.013

M3 - Article

AN - SCOPUS:85070903585

SN - 1359-6462

VL - 173

SP - 154

EP - 157

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Two regimes of ionization-induced recovery in SrTiO₃ under irradiation

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Keywords

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