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The ion-irradiation tolerance of the pyrochlore to fluorite Ho (x) Yb (2-x) TiO₅ and Er₂TiO₅ compounds: A TEM comparative study using both in-situ and bulk ex-situ irradiation approaches

Aughterson, Robert D.; Lumpkin, Gregory R.; Smith, Katherine L.; Reyes, Massey de los; Davis, Joel; Avdeev, Maxim; Ridgway, Mark C.; Cairney, Julie M.


We refine the crystal structures of a systematic series of compounds with the general composition Ho(x)Yb(2-x)TiO₅ (x = 2, 1.6, 1.2, 1, 0.8, 0.4, 0) and Er₂TiO₅ and find a transition from defect-pyrochlore to defect-fluorite structure with increasing ytterbium content, decreasing lanthanide radius. Short-range structure modulations consisting of pyrochlore-like nano-domains are systematically characterised using transmission electron microscopy. We test the Kr²⁺ 1 MeV ion-irradiation response...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Journal of Nuclear Materials
DOI: 10.1016/j.jnucmat.2018.05.026
Access Rights: Open Access


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