Damage evolution and annealing of Au-irradiated samarium titanate pyrochlore

Y. Zhang, V. Shutthanandan, S. Thevuthasan, D. E. McCready, J. Young, R. Devanathan, J. Andreasen, G. Balakrishnan, D. M. Paul, W. J. Weber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Damage evolution and thermal recovery of 1 MeV Au 2+ irradiated samarium titanate pyrochlore (Sm 2Ti 2O 7) single crystals were studied by Rutherford backscattering spectroscopy and nuclear reaction analysis. The damage accumulation follows a nonlinear dependence on dose that is well described by a disorder accumulation model, which indicates a predominant role of defect-stimulated amorphization processes. The critical dose for amorphization at 170 and 300 K is ∼0.14 dpa, and a higher dose of ∼ 0.22 dpa is observed for irradiation at 700 K, which agrees with previous in-situ transmission electron microscopy (TEM) data for polycrystalline Sm 2Ti 2O 7. Annealing in an 18O environment reveals a damage recovery stage at ∼ 850 K that coincides with a significant increase in 18O exchange due to oxygen vacancy mobility. This thermal recovery stage is also consistent with the critical temperature for amorphization measured by in-situ TEM in polycrystalline samples.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsL.-M. Wang, R. Fromknecht, L.L. Snead, D.F. Downey, H. Takahashi
Pages69-74
Number of pages6
Volume792
Publication statusPublished - 2003
Externally publishedYes
EventRadiation Effects and Ion-Beam Processing of Materials - Boston, MA., United States
Duration: 1 Dec 20035 Dec 2003

Other

OtherRadiation Effects and Ion-Beam Processing of Materials
CountryUnited States
CityBoston, MA.
Period1/12/035/12/03

Fingerprint

Samarium
Amorphization
Annealing
Recovery
Transmission electron microscopy
Nuclear reactions
Rutherford backscattering spectroscopy
Oxygen vacancies
Dosimetry
Irradiation
Single crystals
Defects
pyrochlore
Temperature
Hot Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Zhang, Y., Shutthanandan, V., Thevuthasan, S., McCready, D. E., Young, J., Devanathan, R., ... Weber, W. J. (2003). Damage evolution and annealing of Au-irradiated samarium titanate pyrochlore. In L-M. Wang, R. Fromknecht, L. L. Snead, D. F. Downey, & H. Takahashi (Eds.), Materials Research Society Symposium - Proceedings (Vol. 792, pp. 69-74)

Damage evolution and annealing of Au-irradiated samarium titanate pyrochlore. / Zhang, Y.; Shutthanandan, V.; Thevuthasan, S.; McCready, D. E.; Young, J.; Devanathan, R.; Andreasen, J.; Balakrishnan, G.; Paul, D. M.; Weber, W. J.

Materials Research Society Symposium - Proceedings. ed. / L.-M. Wang; R. Fromknecht; L.L. Snead; D.F. Downey; H. Takahashi. Vol. 792 2003. p. 69-74.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, Y, Shutthanandan, V, Thevuthasan, S, McCready, DE, Young, J, Devanathan, R, Andreasen, J, Balakrishnan, G, Paul, DM & Weber, WJ 2003, Damage evolution and annealing of Au-irradiated samarium titanate pyrochlore. in L-M Wang, R Fromknecht, LL Snead, DF Downey & H Takahashi (eds), Materials Research Society Symposium - Proceedings. vol. 792, pp. 69-74, Radiation Effects and Ion-Beam Processing of Materials, Boston, MA., United States, 1/12/03.
Zhang Y, Shutthanandan V, Thevuthasan S, McCready DE, Young J, Devanathan R et al. Damage evolution and annealing of Au-irradiated samarium titanate pyrochlore. In Wang L-M, Fromknecht R, Snead LL, Downey DF, Takahashi H, editors, Materials Research Society Symposium - Proceedings. Vol. 792. 2003. p. 69-74
Zhang, Y. ; Shutthanandan, V. ; Thevuthasan, S. ; McCready, D. E. ; Young, J. ; Devanathan, R. ; Andreasen, J. ; Balakrishnan, G. ; Paul, D. M. ; Weber, W. J. / Damage evolution and annealing of Au-irradiated samarium titanate pyrochlore. Materials Research Society Symposium - Proceedings. editor / L.-M. Wang ; R. Fromknecht ; L.L. Snead ; D.F. Downey ; H. Takahashi. Vol. 792 2003. pp. 69-74
@inproceedings{8b3897080dfc4ff49c525b0b8d05c641,
title = "Damage evolution and annealing of Au-irradiated samarium titanate pyrochlore",
abstract = "Damage evolution and thermal recovery of 1 MeV Au 2+ irradiated samarium titanate pyrochlore (Sm 2Ti 2O 7) single crystals were studied by Rutherford backscattering spectroscopy and nuclear reaction analysis. The damage accumulation follows a nonlinear dependence on dose that is well described by a disorder accumulation model, which indicates a predominant role of defect-stimulated amorphization processes. The critical dose for amorphization at 170 and 300 K is ∼0.14 dpa, and a higher dose of ∼ 0.22 dpa is observed for irradiation at 700 K, which agrees with previous in-situ transmission electron microscopy (TEM) data for polycrystalline Sm 2Ti 2O 7. Annealing in an 18O environment reveals a damage recovery stage at ∼ 850 K that coincides with a significant increase in 18O exchange due to oxygen vacancy mobility. This thermal recovery stage is also consistent with the critical temperature for amorphization measured by in-situ TEM in polycrystalline samples.",
author = "Y. Zhang and V. Shutthanandan and S. Thevuthasan and McCready, {D. E.} and J. Young and R. Devanathan and J. Andreasen and G. Balakrishnan and Paul, {D. M.} and Weber, {W. J.}",
year = "2003",
language = "English",
volume = "792",
pages = "69--74",
editor = "L.-M. Wang and R. Fromknecht and L.L. Snead and D.F. Downey and H. Takahashi",
booktitle = "Materials Research Society Symposium - Proceedings",

}

TY - GEN

T1 - Damage evolution and annealing of Au-irradiated samarium titanate pyrochlore

AU - Zhang, Y.

AU - Shutthanandan, V.

AU - Thevuthasan, S.

AU - McCready, D. E.

AU - Young, J.

AU - Devanathan, R.

AU - Andreasen, J.

AU - Balakrishnan, G.

AU - Paul, D. M.

AU - Weber, W. J.

PY - 2003

Y1 - 2003

N2 - Damage evolution and thermal recovery of 1 MeV Au 2+ irradiated samarium titanate pyrochlore (Sm 2Ti 2O 7) single crystals were studied by Rutherford backscattering spectroscopy and nuclear reaction analysis. The damage accumulation follows a nonlinear dependence on dose that is well described by a disorder accumulation model, which indicates a predominant role of defect-stimulated amorphization processes. The critical dose for amorphization at 170 and 300 K is ∼0.14 dpa, and a higher dose of ∼ 0.22 dpa is observed for irradiation at 700 K, which agrees with previous in-situ transmission electron microscopy (TEM) data for polycrystalline Sm 2Ti 2O 7. Annealing in an 18O environment reveals a damage recovery stage at ∼ 850 K that coincides with a significant increase in 18O exchange due to oxygen vacancy mobility. This thermal recovery stage is also consistent with the critical temperature for amorphization measured by in-situ TEM in polycrystalline samples.

AB - Damage evolution and thermal recovery of 1 MeV Au 2+ irradiated samarium titanate pyrochlore (Sm 2Ti 2O 7) single crystals were studied by Rutherford backscattering spectroscopy and nuclear reaction analysis. The damage accumulation follows a nonlinear dependence on dose that is well described by a disorder accumulation model, which indicates a predominant role of defect-stimulated amorphization processes. The critical dose for amorphization at 170 and 300 K is ∼0.14 dpa, and a higher dose of ∼ 0.22 dpa is observed for irradiation at 700 K, which agrees with previous in-situ transmission electron microscopy (TEM) data for polycrystalline Sm 2Ti 2O 7. Annealing in an 18O environment reveals a damage recovery stage at ∼ 850 K that coincides with a significant increase in 18O exchange due to oxygen vacancy mobility. This thermal recovery stage is also consistent with the critical temperature for amorphization measured by in-situ TEM in polycrystalline samples.

UR - http://www.scopus.com/inward/record.url?scp=2442593920&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442593920&partnerID=8YFLogxK

M3 - Conference contribution

VL - 792

SP - 69

EP - 74

BT - Materials Research Society Symposium - Proceedings

A2 - Wang, L.-M.

A2 - Fromknecht, R.

A2 - Snead, L.L.

A2 - Downey, D.F.

A2 - Takahashi, H.

ER -