The influence of crystal structure on ion-irradiation tolerance in the Sm(x)Yb(2-x)TiO5 series

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dc.contributor.authorAughterson, RDen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.contributor.authorde los Reyes, Men_AU
dc.contributor.authorGault, Ben_AU
dc.contributor.authorBaldo, Pen_AU
dc.contributor.authorRyan, EAen_AU
dc.contributor.authorWhittle, KRen_AU
dc.contributor.authorSmith, KLen_AU
dc.contributor.authorCairney, JMen_AU
dc.date.accessioned2020-03-26T02:06:14Zen_AU
dc.date.available2020-03-26T02:06:14Zen_AU
dc.date.issued2016-04-01en_AU
dc.date.statistics2020-03-20en_AU
dc.description.abstractThis ion-irradiation study covers the four major crystal structure types in the Ln2TiO5 series (Ln = lanthanide), namely orthorhombic Pnma, hexagonal P63/mmc, cubic (pyrochlore-like) Fd-3m and cubic (fluorite-like) Fm-3m. This is the first systematic examination of the complete Ln2TiO5 crystal system and the first reported examination of the hexagonal structure. A series of samples, based on the stoichiometry Sm(x)Yb(2-x)TiO5 (where x = 2, 1.4, 1, 0.6, and 0) have been irradiated using 1 MeV Kr2+ ions and characterised in-situ using a transmission electron microscope. Two quantities are used to define ion-irradiation tolerance: critical dose of amorphisation (Dc), which is the irradiating ion dose required for a crystalline to amorphous transition, and the critical temperature (Tc), above which the sample cannot be rendered amorphous by ion irradiation. The structure type plus elements of bonding are correlated to ion-irradiation tolerance. The cubic phases, Yb2TiO5 and Sm0.6Yb1.4TiO5, were found to be the most radiation tolerant, with Tc values of 479 and 697 K respectively. The improved radiation tolerance with a change in symmetry to cubic is consistent with previous studies of similar compounds. © 2016 Elsevier B.V.en_AU
dc.identifier.citationAughterson, R. D., Lumpkin, G. R., de los Reyes, M., Gault, B., Baldo, P., Ryan, E., Whittle, K. R., Smith, K, L., & Cairney, J. M. (2016). The influence of crystal structure on ion-irradiation tolerance in the Sm(x)Yb(2-x)TiO 5 series. Journal of Nuclear Materials, 471, 17-24. doi:10.1016/j.jnucmat.2015.12.036en_AU
dc.identifier.govdoc8992en_AU
dc.identifier.issn0022-3115en_AU
dc.identifier.journaltitleJournal of Nuclear Materialsen_AU
dc.identifier.pagination17-24en_AU
dc.identifier.urihttps://doi.org/10.1016/j.jnucmat.2015.12.036en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9248en_AU
dc.identifier.volume471en_AU
dc.language.isoenen_AU
dc.publisherElsevier B.V.en_AU
dc.subjectIrradiationen_AU
dc.subjectCrystal structureen_AU
dc.subjectStoichiometryen_AU
dc.subjectAmorphous stateen_AU
dc.subjectOrthorhombic latticesen_AU
dc.subjectElectron microscopyen_AU
dc.titleThe influence of crystal structure on ion-irradiation tolerance in the Sm(x)Yb(2-x)TiO5 seriesen_AU
dc.typeJournal Articleen_AU
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