Pyrochlore-fluorite transition in Y2Sn2-xZrxO7 - implications for stability
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Date
2011-02-02
Journal Title
Journal ISSN
Volume Title
Publisher
Australian Institute of Physics
Abstract
The pyrochlore-fluorite transition is an important factor in determining how materials behave under conditions of irradiation, whether it be as a waste form or as a nuclear material, e.g. ODS additive. Yttrium based materials are often added as oxides to metallic systems, e.g. oxide dispersion strengthened (ODS) steels, which have a wide range of applications. As part of a large programme of research investigating and developing materials which show a high degree of radiation damage resistance, materials based on Y2Sn2-xZrxO7 have been studied. The materials have been examined to determine the order-disorder transition (pyrochlorefluorite), and how this effects the radiation damage resistance, particularly as both end members have previously been shown to be resistant to damage/amorphisation. Results are presented from diffraction and spectroscopic studies showing the degree of order/disorder within the system.
Description
Keywords
Irradiation, Pyrochlore, Fluorite, Phase transformations, Zirconium, Materials, Yttrium, Physical radiation effects, Waste forms
Citation
de los Reyes, M., Whittle, K. R., Mitchell, M., Ashbrook, S. E., & Lumpkin, G. R. (2011). Pyrochlore-fluorite transition in Y2Sn2-xZrxO7 - implications for stability. Poster presented to the Australian and New Zealand Institutes of Physics 35th Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, NSW, 2nd - 4th February, 2011. Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2011/