Ion irradiation of the TiO2 polymorphs and cassiterite

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dc.contributor.authorLumpkin, GRen_AU
dc.contributor.authorBlackford, MGen_AU
dc.contributor.authorSmith, KLen_AU
dc.contributor.authorWhittle, KRen_AU
dc.contributor.authorZaluzec, NJen_AU
dc.contributor.authorRyan, EAen_AU
dc.contributor.authorBaldo, Pen_AU
dc.date.accessioned2010-04-19T23:55:38Zen_AU
dc.date.accessioned2010-04-30T05:09:37Zen_AU
dc.date.available2010-04-19T23:55:38Zen_AU
dc.date.available2010-04-30T05:09:37Zen_AU
dc.date.issued2010-01en_AU
dc.date.statistics2010-01en_AU
dc.description.abstractThin crystals of rutile, brookite, anatase, and cassiterite were irradiated in situ in the transmission electron microscope using 1.0 MeV Kr ions at 50–300 K. Synthetic rutile and natural cassiterite, with 0.1–0.2 wt% impurities, remain crystalline up to a fluence of 5 x 1015 ions cm–2 without evidence for amorphization at 50 K. Natural brookite and anatase, with 0.3–0.5 wt% impurities, become amorphous at fluences of 8.1 x 1014 and 2.3 x 1014 ions cm–2, respectively. We have also studied two natural rutile samples containing ~1.7 and 1.2 wt% impurities. These samples became amorphous at 9.2 x 1014 and 8.6 x 1014 ions cm–2 at 50 K, respectively. Further analyses of the fluence-temperature data for natural brookite, rutile, and anatase give critical amorphization temperatures of 168 ± 11, 209 ± 8, and 242 ± 6 K, respectively. Results are briefly discussed with respect to several criteria for radiation resistance, including aspects of the structure, bonding, and energetics of defect formation and migration. © 2010, Mineralogical Society of Americaen_AU
dc.identifier.citationLumpkin, G. R., Blackford, M. G., Smith, K. L., Whittle, K. R., Zaluzec, N. J., Ryan, E. A., & Baldo, P. (2010). Ion irradiation of the TiO2 polymorphs and cassiterite. American Mineralogist, 95(1), 192-195. doi:10.2138/am.2010.3329en_AU
dc.identifier.govdoc1620en_AU
dc.identifier.issn0003-004Xen_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleAmerican Mineralogisten_AU
dc.identifier.pagination192-195en_AU
dc.identifier.urihttp://dx.doi.org/10.2138/am.2010.3329en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3232en_AU
dc.identifier.volume95en_AU
dc.language.isoenen_AU
dc.publisherMineralogical Society of Americaen_AU
dc.subjectIrradiationen_AU
dc.subjectRutileen_AU
dc.subjectTransmission electron microscopyen_AU
dc.subjectDefectsen_AU
dc.subjectMigrationen_AU
dc.subjectCrystalsen_AU
dc.titleIon irradiation of the TiO2 polymorphs and cassiteriteen_AU
dc.typeJournal Articleen_AU
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