The ion irradiation tolerance of the fluorite RE2MO5 (RE = Sm, and Yb, M = Ti, Zr, and Sn) system

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dc.contributor.authorAughterson, RDen_AU
dc.contributor.authorNewman, Ren_AU
dc.contributor.authorIonescu, Men_AU
dc.contributor.authorLumpkin, GRen_AU
dc.date.accessioned2022-11-02T22:44:49Zen_AU
dc.date.available2022-11-02T22:44:49Zen_AU
dc.date.issued2021-12-06en_AU
dc.date.statistics2022-10-07en_AU
dc.description.abstractIn the search for novel ceramics for use within nuclear fuel–related applications and nuclear waste-form matrices, a major focus has been on the development of radiation-tolerant materials. Of particular interest in this field have been numerous compounds with either pyrochlore or the related fluorite-type structures. In this study, we look to expand the family of compounds with defect fluorite–type structure. We have fabricated three new compounds; Yb2Sn1.125O5.25, Yb2Sn1.25O5.5, and Yb2Sn1.375O5.75. The compound Yb2Sn1.125O5.25 was determined, via x-ray diffraction, to have the long-range defect fluorite structure, Fm-3 m symmetry, with cell parameter a = 5.17233(1). Further to this, Sm2ZrO5 and Yb2TiO5 compounds were also fabricated and crystal structures characterised. The use of transmission electron microscopy has revealed a much more complex crystal structure than that of the relatively high symmetry fluorite, with the presence of structural modulations being detected. The ion-irradiation response of these compounds was tested via bulk specimen irradiation using 15-MeV gold ions with grazing incidence x-ray diffraction characterisation. The results show that both Sm2ZrO5 and Yb2Sn1.25O5.5 are highly tolerant to ion-irradiation exposure whilst Yb2TiO5 is susceptible to amorphisation. Crown Copyright © 2021en_AU
dc.identifier.citationAughterson, R. D., Newman, R., Ionescu, M., & Lumpkin, G. R. (2022). The ion irradiation tolerance of the fluorite RE2MO5 (RE= Sm, and Yb, M= Ti, Zr, and Sn) system. Journal of the Australian Ceramic Society, 58, 287-298. doi:10.1007/s41779-021-00689-9en_AU
dc.identifier.issn2510-1579en_AU
dc.identifier.journaltitleJournal of the Australian Ceramic Societyen_AU
dc.identifier.pagination287-298en_AU
dc.identifier.urihttps://doi.org/10.1007/s41779-021-00689-9en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13958en_AU
dc.identifier.volume58en_AU
dc.language.isoenen_AU
dc.publisherSpringer Natureen_AU
dc.subjectIonsen_AU
dc.subjectIrradiationen_AU
dc.subjectFluoriteen_AU
dc.subjectPyrochloreen_AU
dc.subjectCeramicsen_AU
dc.subjectMaterialsen_AU
dc.subjectCrystal structureen_AU
dc.titleThe ion irradiation tolerance of the fluorite RE2MO5 (RE = Sm, and Yb, M = Ti, Zr, and Sn) systemen_AU
dc.typeJournal Articleen_AU
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