An investigation of LnUO4 (Ln = Dy and Ho): structures, microstructures, uranium valences and magnetic properties

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dc.contributor.authorLu, KTen_AU
dc.contributor.authorZhang, YJen_AU
dc.contributor.authorWei, Ten_AU
dc.contributor.authorZhang, ZMen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorZheng, RKen_AU
dc.date.accessioned2021-09-21T23:25:10Zen_AU
dc.date.available2021-09-21T23:25:10Zen_AU
dc.date.issued2021-09-12en_AU
dc.date.statistics2021-09-16en_AU
dc.description.abstractThe phase formation, structures, microstructures, uranium valences and magnetic properties of LnUO4 (Ln = Dy and Ho) were investigated. Although sintering of the precursors in argon at 1450 °C for seven days and 1400 °C for six hours both resulted in the desired phase, sintering at higher temperature for longer duration led to the formations of well crystalized lanthanide monouranates with much better homogeneity. Cubic fluorite structures were determined using X-ray diffraction data, which was confirmed with transmission electron microscopy and Raman spectroscopy. The nature of pentavalent uranium was verified with a combination of diffuse reflectance and X-ray photoelectron spectroscopies. The magnetic suseptability measurements revealed that they are paramagnetic with no long-range magnetic orders, likely due to the extensive short-range oxygen defects. Overall the improved structural and spectroscopic understandings of LnUO4 have implications in nuclear materials especially for potential accident tolerance fuels and spent fuel management. Crown Copyright © 2021 Published by Elsevier Ltd.en_AU
dc.identifier.citationLu, K. T., Zhang, Y., Wei, T., Zhang, Z., Avdeev, M., & Zheng, R. (2021). An investigation of LnUO4 (Ln = Dy and Ho): structures, microstructures, uranium valences and magnetic properties. Journal of the European Ceramic Society, 41(12), 6000-6009, doi:10.1016/j.jeurceramsoc.2021.05.040en_AU
dc.identifier.issn0955-2219en_AU
dc.identifier.issue12en_AU
dc.identifier.journaltitleJournal of the European Ceramic Societyen_AU
dc.identifier.pagination6000-6009en_AU
dc.identifier.urihttps://doi.org/10.1016/j.jeurceramsoc.2021.05.040en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11773en_AU
dc.identifier.volume41en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectDysprosiumen_AU
dc.subjectUraniumen_AU
dc.subjectHolmiumen_AU
dc.subjectMagnetismen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectRare earthsen_AU
dc.subjectTransmission electron microscopyen_AU
dc.subjectRaman spectroscopyen_AU
dc.titleAn investigation of LnUO4 (Ln = Dy and Ho): structures, microstructures, uranium valences and magnetic propertiesen_AU
dc.typeJournal Articleen_AU
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