Ion beam irradiation of ABO4 compounds with the fergusonite, monazite, scheelite, and zircon structures

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dc.contributor.authorde los Reyes, Men_AU
dc.contributor.authorAughterson, RDen_AU
dc.contributor.authorGregg, DJen_AU
dc.contributor.authorMiddleburgh, SCen_AU
dc.contributor.authorZaluzec, NJen_AU
dc.contributor.authorHuai, Pen_AU
dc.contributor.authorRen, CLen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.date.accessioned2020-09-02T23:03:37Zen_AU
dc.date.available2020-09-02T23:03:37Zen_AU
dc.date.issued2020-06-04en_AU
dc.date.statistics2020-09-01en_AU
dc.description.abstractThe effects of irradiation on CaWO4, SrWO4, BaWO4, YVO4, LaVO4, YNbO4, and LaNbO4 were investigated on thin crystals using 1.0 MeV Kr ions at 50‐1000 K. All of the ABO4 compounds can be amorphized with calculated damage cross sections (σa = 1/Fc0) in the range of ~0.30‐1.09 × 10‐14 cm2 ion−1 at zero Kelvin. The analysis of fluence‐temperature data returned critical temperatures for amorphization (Tc) of 311 ± 1, 358 ± 90, 325 ± 19, 415 ± 17, 541 ± 6, 636 ± 26, and 1012 ± 1 K, respectively, for the compounds listed above. Compared with previous in situ irradiation of ABO4 orthophosphate samples using 0.8 MeV Kr ions, the Tc values of LaVO4 and YVO4 are higher than those of LaPO4 and YPO4 by 82 K and 124 K, respectively. The Tc values of the three scheelite structures, CaWO4, SrWO4, and BaWO4, indicate that they are the most radiation tolerant compounds under these conditions. The A‐B cation anti‐site energies, EfAB, determined by DFT range from 2.48 to 10.58 eV and are highly correlated with the A‐B cation ionic radius ratio, rA/rB, but are not correlated with Tc across the different structure types, suggesting that the formation and migration energies of Frenkel defects play a more important role in damage recovery in these compounds. We also discuss the role of cation and anion charge/iconicity as determined by DFT. ABO4 compounds with the zircon structure and B = P or V have a distinct advantage over those with B = Si as the damaged regions do not appear to be significantly affected by polymerization of (PO4)3− or (VO4)3− groups which might stabilize the amorphous fraction and ultimately lead to phase separation as observed in zircon (ZrSiO4). © 1999-2020 John Wiley & Sons, Inc.en_AU
dc.identifier.citationde los Reyes, M., Aughterson, R. D., Gregg, D. J., Middleburgh, S. C., Zaluzec, N. J., Huai, P., Ren, C., & Lumpkin, G. R. (2020). Ion beam irradiation of ABO4 compounds with the fergusonite, monazite, scheelite, and zircon structures. Journal of the American Ceramic Society, 103 (10). 5502– 5514. doi:10.1111/jace.17288en_AU
dc.identifier.govdoc9991en_AU
dc.identifier.issn0002-7820en_AU
dc.identifier.issue10en_AU
dc.identifier.journaltitleJournal of the American Ceramic Societyen_AU
dc.identifier.pagination5502-5514en_AU
dc.identifier.urihttps://doi.org/10.1111/jace.17288en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9757en_AU
dc.identifier.volume103en_AU
dc.language.isoenen_AU
dc.publisherhttps://doi.org/10.1111/jace.17288en_AU
dc.subjectIrradiationen_AU
dc.subjectIon beamsen_AU
dc.subjectOxidesen_AU
dc.subjectMonazitesen_AU
dc.subjectZirconen_AU
dc.subjectCrystalsen_AU
dc.subjectAmorphous stateen_AU
dc.subjectFrenkel defectsen_AU
dc.titleIon beam irradiation of ABO4 compounds with the fergusonite, monazite, scheelite, and zircon structuresen_AU
dc.typeJournal Articleen_AU
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