Surface and bulk electron irradiation effects in simple and complex glasses

Anamul H. Mir, B. Boizot, T. Charpentier, M. Gennisson, M. Odorico, R. Podor, C. Jégou, S. Bouffard, S. Peuget

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A three oxide sodium borosilicate (BS3) and a complex, thirty oxide borosilicate glass (SON68) were irradiated with 2.3 MeV electrons to doses ranging from 0.15 GGy to 4.6 GGy at 350 K. The irradiated glasses were characterized using Raman and NMR spectroscopies, ToF-SIMS, AFM and microhardness to understand surface and bulk irradiation effects. Glass surfaces were observed to be depleted of the alkali atoms. The depletion depth depended on the dose and glass composition, reaching 660 nm and 500 nm on any vacuum facing surface for BS3 and SON68 at 4.6 GGy respectively. The alkali-depleted region was enriched in molecular oxygen and showed characteristics of phase separated glasses. In the bulk of the glass, Raman and NMR spectroscopies showed a silica network depolymerisation, a transformation of 4 to 3-coordinated boron and formation of non-bridging oxygen atoms on silicon and boron atoms. The hardness of the depolymerized glasses decreased by 20% (BS3) and 10% (SON68). Based on the experiments and theory, it is shown that electron stimulated desorption is the dominant surface depletion mechanism. These results show that the surfaces behave differently than the bulk of the glass. Therefore, surface related phenomena are expected to be dominant in TEM and other in-situ and ex-situ surface characterizations having depth resolution of a few hundred nanometers. Thus, sample size plays an important role in evaluating the radiation damage and one must be careful in extending the conclusions drawn from surface sensitive techniques to bulk irradiation effects in electron irradiated glasses.
LanguageEnglish
Pages141-149
Number of pages9
JournalJournal of Non-Crystalline Solids
Volume453
Early online date12 Oct 2016
DOIs
Publication statusPublished - 1 Dec 2016
Externally publishedYes

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Electron irradiation
electron irradiation
Glass
glass
Boron
Alkalies
Atoms
Nuclear magnetic resonance spectroscopy
Raman spectroscopy
Electrons
alkalies
depletion
boron
Irradiation
spectroscopy
depolymerization
dosage
nuclear magnetic resonance
Depolymerization
irradiation

Cite this

Mir, A. H., Boizot, B., Charpentier, T., Gennisson, M., Odorico, M., Podor, R., ... Peuget, S. (2016). Surface and bulk electron irradiation effects in simple and complex glasses. Journal of Non-Crystalline Solids, 453, 141-149. https://doi.org/10.1016/j.jnoncrysol.2016.10.009
Mir, Anamul H. ; Boizot, B. ; Charpentier, T. ; Gennisson, M. ; Odorico, M. ; Podor, R. ; Jégou, C. ; Bouffard, S. ; Peuget, S. / Surface and bulk electron irradiation effects in simple and complex glasses. In: Journal of Non-Crystalline Solids. 2016 ; Vol. 453. pp. 141-149.
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Mir, AH, Boizot, B, Charpentier, T, Gennisson, M, Odorico, M, Podor, R, Jégou, C, Bouffard, S & Peuget, S 2016, 'Surface and bulk electron irradiation effects in simple and complex glasses', Journal of Non-Crystalline Solids, vol. 453, pp. 141-149. https://doi.org/10.1016/j.jnoncrysol.2016.10.009

Surface and bulk electron irradiation effects in simple and complex glasses. / Mir, Anamul H.; Boizot, B.; Charpentier, T.; Gennisson, M.; Odorico, M.; Podor, R.; Jégou, C.; Bouffard, S.; Peuget, S.

In: Journal of Non-Crystalline Solids, Vol. 453, 01.12.2016, p. 141-149.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Surface and bulk electron irradiation effects in simple and complex glasses

AU - Mir, Anamul H.

AU - Boizot, B.

AU - Charpentier, T.

AU - Gennisson, M.

AU - Odorico, M.

AU - Podor, R.

AU - Jégou, C.

AU - Bouffard, S.

AU - Peuget, S.

PY - 2016/12/1

Y1 - 2016/12/1

N2 - A three oxide sodium borosilicate (BS3) and a complex, thirty oxide borosilicate glass (SON68) were irradiated with 2.3 MeV electrons to doses ranging from 0.15 GGy to 4.6 GGy at 350 K. The irradiated glasses were characterized using Raman and NMR spectroscopies, ToF-SIMS, AFM and microhardness to understand surface and bulk irradiation effects. Glass surfaces were observed to be depleted of the alkali atoms. The depletion depth depended on the dose and glass composition, reaching 660 nm and 500 nm on any vacuum facing surface for BS3 and SON68 at 4.6 GGy respectively. The alkali-depleted region was enriched in molecular oxygen and showed characteristics of phase separated glasses. In the bulk of the glass, Raman and NMR spectroscopies showed a silica network depolymerisation, a transformation of 4 to 3-coordinated boron and formation of non-bridging oxygen atoms on silicon and boron atoms. The hardness of the depolymerized glasses decreased by 20% (BS3) and 10% (SON68). Based on the experiments and theory, it is shown that electron stimulated desorption is the dominant surface depletion mechanism. These results show that the surfaces behave differently than the bulk of the glass. Therefore, surface related phenomena are expected to be dominant in TEM and other in-situ and ex-situ surface characterizations having depth resolution of a few hundred nanometers. Thus, sample size plays an important role in evaluating the radiation damage and one must be careful in extending the conclusions drawn from surface sensitive techniques to bulk irradiation effects in electron irradiated glasses.

AB - A three oxide sodium borosilicate (BS3) and a complex, thirty oxide borosilicate glass (SON68) were irradiated with 2.3 MeV electrons to doses ranging from 0.15 GGy to 4.6 GGy at 350 K. The irradiated glasses were characterized using Raman and NMR spectroscopies, ToF-SIMS, AFM and microhardness to understand surface and bulk irradiation effects. Glass surfaces were observed to be depleted of the alkali atoms. The depletion depth depended on the dose and glass composition, reaching 660 nm and 500 nm on any vacuum facing surface for BS3 and SON68 at 4.6 GGy respectively. The alkali-depleted region was enriched in molecular oxygen and showed characteristics of phase separated glasses. In the bulk of the glass, Raman and NMR spectroscopies showed a silica network depolymerisation, a transformation of 4 to 3-coordinated boron and formation of non-bridging oxygen atoms on silicon and boron atoms. The hardness of the depolymerized glasses decreased by 20% (BS3) and 10% (SON68). Based on the experiments and theory, it is shown that electron stimulated desorption is the dominant surface depletion mechanism. These results show that the surfaces behave differently than the bulk of the glass. Therefore, surface related phenomena are expected to be dominant in TEM and other in-situ and ex-situ surface characterizations having depth resolution of a few hundred nanometers. Thus, sample size plays an important role in evaluating the radiation damage and one must be careful in extending the conclusions drawn from surface sensitive techniques to bulk irradiation effects in electron irradiated glasses.

KW - electron irradiation

KW - glasses

KW - Radiation damage

KW - ToF-SIMS

KW - Raman spectroscopy

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U2 - 10.1016/j.jnoncrysol.2016.10.009

DO - 10.1016/j.jnoncrysol.2016.10.009

M3 - Article

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EP - 149

JO - Journal of Non-Crystalline Solids

T2 - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

ER -