Radiation damage at the coherent anatase TiO 2 / SrTiO 3 interface under Ne ion irradiation

M. J. Zhuo; B. P. Uberuaga; L. Yan; E. G. Fu; R. M. Dickerson; Y. Q. Wang; A. Misra; M. Nastasi; Q. X. Jia

doi:10.1016/j.jnucmat.2012.05.027

Radiation damage at the coherent anatase TiO ₂ / SrTiO ₃ interface under Ne ion irradiation

M. J. Zhuo
, B. P. Uberuaga
, L. Yan
, E. G. Fu
, R. M. Dickerson
, Y. Q. Wang
, A. Misra
, M. Nastasi
, Q. X. Jia

Department of Materials Design and Innovation

Los Alamos National Laboratory
Los Alamos National Laboratory Materials Science and Technology Division

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

27 Scopus citations

Abstract

Epitaxial anatase TiO ₂ films with thickness of around 300 nm were deposited on SrTiO ₃ and irradiated with 250 keV Ne ions at room temperature. X-ray diffraction, Rutherford backscattering spectrometry, and transmission electron microscopy were used to characterize the microstructural changes under irradiation. Two primary features are observed in the irradiated material: a damaged layer with a high density of nano-sized defects including dislocation loops was observed in the TiO ₂ film and, near the TiO ₂/SrTiO ₃ interface, a defect denuded zone formed on the TiO ₂ side while an amorphous layer formed on the SrTiO ₃ side. Atomistic calculations attribute the formation of both the defect-denuded zone and the interfacial amorphous layer not to the interaction between the irradiation induced defects and the TiO ₂/SrTiO ₃ hetero-interface but rather differences in chemical potential and mobilities for defects in each of the two phases.

Original language	English
Pages (from-to)	177-184
Number of pages	8
Journal	Journal of Nuclear Materials
Volume	429
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2012.05.027
State	Published - Oct 2012

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title = "Radiation damage at the coherent anatase TiO 2 / SrTiO 3 interface under Ne ion irradiation",

abstract = "Epitaxial anatase TiO 2 films with thickness of around 300 nm were deposited on SrTiO 3 and irradiated with 250 keV Ne ions at room temperature. X-ray diffraction, Rutherford backscattering spectrometry, and transmission electron microscopy were used to characterize the microstructural changes under irradiation. Two primary features are observed in the irradiated material: a damaged layer with a high density of nano-sized defects including dislocation loops was observed in the TiO 2 film and, near the TiO 2/SrTiO 3 interface, a defect denuded zone formed on the TiO 2 side while an amorphous layer formed on the SrTiO 3 side. Atomistic calculations attribute the formation of both the defect-denuded zone and the interfacial amorphous layer not to the interaction between the irradiation induced defects and the TiO 2/SrTiO 3 hetero-interface but rather differences in chemical potential and mobilities for defects in each of the two phases.",

author = "Zhuo, \{M. J.\} and Uberuaga, \{B. P.\} and L. Yan and Fu, \{E. G.\} and Dickerson, \{R. M.\} and Wang, \{Y. Q.\} and A. Misra and M. Nastasi and Jia, \{Q. X.\}",

year = "2012",

month = oct,

doi = "10.1016/j.jnucmat.2012.05.027",

language = "English",

volume = "429",

pages = "177--184",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Radiation damage at the coherent anatase TiO 2 / SrTiO 3 interface under Ne ion irradiation

AU - Zhuo, M. J.

AU - Uberuaga, B. P.

AU - Yan, L.

AU - Fu, E. G.

AU - Dickerson, R. M.

AU - Wang, Y. Q.

AU - Misra, A.

AU - Nastasi, M.

AU - Jia, Q. X.

PY - 2012/10

Y1 - 2012/10

N2 - Epitaxial anatase TiO 2 films with thickness of around 300 nm were deposited on SrTiO 3 and irradiated with 250 keV Ne ions at room temperature. X-ray diffraction, Rutherford backscattering spectrometry, and transmission electron microscopy were used to characterize the microstructural changes under irradiation. Two primary features are observed in the irradiated material: a damaged layer with a high density of nano-sized defects including dislocation loops was observed in the TiO 2 film and, near the TiO 2/SrTiO 3 interface, a defect denuded zone formed on the TiO 2 side while an amorphous layer formed on the SrTiO 3 side. Atomistic calculations attribute the formation of both the defect-denuded zone and the interfacial amorphous layer not to the interaction between the irradiation induced defects and the TiO 2/SrTiO 3 hetero-interface but rather differences in chemical potential and mobilities for defects in each of the two phases.

AB - Epitaxial anatase TiO 2 films with thickness of around 300 nm were deposited on SrTiO 3 and irradiated with 250 keV Ne ions at room temperature. X-ray diffraction, Rutherford backscattering spectrometry, and transmission electron microscopy were used to characterize the microstructural changes under irradiation. Two primary features are observed in the irradiated material: a damaged layer with a high density of nano-sized defects including dislocation loops was observed in the TiO 2 film and, near the TiO 2/SrTiO 3 interface, a defect denuded zone formed on the TiO 2 side while an amorphous layer formed on the SrTiO 3 side. Atomistic calculations attribute the formation of both the defect-denuded zone and the interfacial amorphous layer not to the interaction between the irradiation induced defects and the TiO 2/SrTiO 3 hetero-interface but rather differences in chemical potential and mobilities for defects in each of the two phases.

UR - https://www.scopus.com/pages/publications/84865851284

U2 - 10.1016/j.jnucmat.2012.05.027

DO - 10.1016/j.jnucmat.2012.05.027

M3 - Article

AN - SCOPUS:84865851284

SN - 0022-3115

VL - 429

SP - 177

EP - 184

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

Radiation damage at the coherent anatase TiO ₂ / SrTiO ₃ interface under Ne ion irradiation

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