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
| dc.contributor.author | Aughterson, Robert D. | |
| dc.contributor.author | Lumpkin, Gregory R. | |
| dc.contributor.author | Smith, Katherine L. | |
| dc.contributor.author | Reyes, Massey de los | |
| dc.contributor.author | Davis, Joel | |
| dc.contributor.author | Avdeev, Maxim | |
| dc.contributor.author | Ridgway, Mark C. | |
| dc.contributor.author | Cairney, Julie M. | |
| dc.date.accessioned | 2018-05-24T05:13:37Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | 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 of Ho2TiO5, HoYbTiO5, Yb2TiO5, and Er₂TiO₅, via the crystalline to amorphous transition observed by using the in-situ TEM approach. The critical dose of amorphisation, Dc, was measured at various temperatures and used to calculate the critical temperature for maintaining crystallinity, Tc. A trend of lower Tc values with decreasing lanthanide radius is found. We describe a new approach for determining Tc values using cross-sectional TEM analysis of ex-situ bulk irradiated, 1 MeV Se+, samples; Ho₂TiO₅, HoYbTiO₅ and Yb₂TiO₅. The results of Dc and Tc values using the two approaches vary; however the trends across the sample system remain the same. | en_AU |
| dc.format.mimetype | application/pdf | en_AU |
| dc.identifier.issn | 0022-3115 | en_AU |
| dc.identifier.uri | http://hdl.handle.net/1885/143594 | |
| dc.publisher | Elsevier | en_AU |
| dc.rights | http://www.sherpa.ac.uk/romeo/issn/0022-3115/..."Author's post-print on open access repository after an embargo period of between 12 months and 48 months" from SHERPA/RoMEO site (as at 24/05/18). This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | en_AU |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.source | Journal of Nuclear Materials | en_AU |
| dc.subject | In-situ transmission electron microscopy | en_AU |
| dc.subject | Ion irradiation | en_AU |
| dc.subject | Ceramics | en_AU |
| dc.subject | Crystallography | en_AU |
| dc.subject | Ln₂TiO₅ | en_AU |
| dc.title | 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 | en_AU |
| dc.type | Journal article | en_AU |
| dcterms.accessRights | Open Access | en_AU |
| local.bibliographicCitation.lastpage | 326 | en_AU |
| local.bibliographicCitation.startpage | 316 | en_AU |
| local.contributor.affiliation | Ridgway, M. C., Centre for Science and Engineering of Materials, The Australian National University | en_AU |
| local.contributor.authoremail | u9001886@anu.edu.au | en_AU |
| local.contributor.authoruid | u9001886 | en_AU |
| local.identifier.ariespublication | a383154xPUB10324 | |
| local.identifier.citationvolume | 507 | en_AU |
| local.identifier.doi | 10.1016/j.jnucmat.2018.05.026 | en_AU |
| local.identifier.uidSubmittedBy | u1005913 | en_AU |
| local.publisher.url | https://www.elsevier.com/ | en_AU |
| local.type.status | Accepted Version | en_AU |