Novel complex ceramic oxides, Ln2TiO5 (Ln = La, Sm, Gd, Tb, Dy, Ho, Er, and Yb), for polyphase nuclear waste‐forms

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dc.contributor.authorAughterson, RDen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.contributor.authorSmith, KLen_AU
dc.contributor.authorCairney, JMen_AU
dc.date.accessioned2020-09-11T02:29:19Zen_AU
dc.date.available2020-09-11T02:29:19Zen_AU
dc.date.issued2020-06-19en_AU
dc.date.statistics2020-09-11en_AU
dc.description.abstractAs part of a broader study of ceramic nuclear waste‐forms, four different lanthanide titanates were fabricated; La0.1Sm0.1Gd0.1Tb0.1Dy0.3Ho0.1Er0.2YbTiO5, Sm0.3Gd0.3Dy0.3Yb1.1TiO5, Sm0.1Gd0.4Dy0.4Yb1.1TiO5, and Sm0.2Gd0.2Dy0.2Yb1.4TiO5. The aim was to produce single‐phase novel materials with cubic symmetry, capable of incorporating a wide variety of cations and with acceptable radiation tolerance. The chemistry flexibility and radiation tolerance are some of the major desirable properties for nuclear waste‐form materials. By using multiple lanthanides the average lanthanide radius can be controlled and consequently the structure, along with properties such as radiation tolerance. The radiation tolerance was assessed using in situ 1 MeV krypton irradiation and transmission electron microscopy characterization. Those materials for which cubic symmetry was achieved displayed better radiation tolerance; a greater critical fluence of ions (Fc) was required for the crystalline to amorphous transition, and a lower temperature was required to maintain crystallinity (Tc) during irradiation. © 2020 The American Ceramic Societyen_AU
dc.identifier.citationAughterson, R. D., Lumpkin, G. R., Smith, K. L., & Cairney, J. M. (2020). Novel complex ceramic oxides, Ln2TiO5 (Ln = La, Sm, Gd, Tb, Dy, Ho, Er, and Yb), for polyphase nuclear waste-forms. Journal of the American Ceramic Society, 103(10), 5536-5545. doi:10.1111/jace.17318en_AU
dc.identifier.issn1551-2916en_AU
dc.identifier.issue10en_AU
dc.identifier.journaltitleJournal of the American Ceramic Societyen_AU
dc.identifier.pagination5536-5545en_AU
dc.identifier.urihttps://doi.org/10.1111/jace.17318en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/9773en_AU
dc.identifier.volume103en_AU
dc.language.isoenen_AU
dc.publisherThe American Ceramic Societyen_AU
dc.subjectRadioactive wastesen_AU
dc.subjectCeramicsen_AU
dc.subjectSynthetic rocksen_AU
dc.subjectRare earthsen_AU
dc.subjectFabricationen_AU
dc.subjectAmorphous stateen_AU
dc.subjectCrystallizationen_AU
dc.titleNovel complex ceramic oxides, Ln2TiO5 (Ln = La, Sm, Gd, Tb, Dy, Ho, Er, and Yb), for polyphase nuclear waste‐formsen_AU
dc.typeJournal Articleen_AU
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