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	Irradiation induced order-disorder phase transformation in A(4)Zr(3)O(12) (A = Sc, Lu and Dy)
	Zhang, J. ; Wang, Y. Q. ; Valdez, J. A. ; Tang, M. ; Sickafus, K. E. ; Zhang J(张建)
	2011-12
关键词	ION-IRRADIATION RADIATION TOLERANCE NUCLEAR-WASTE PLUTONIUM IMMOBILIZATION TRANSITION ZIRCONIA DISPOSAL OXIDES
英文摘要	Conference Name:Conference on NuMat. Conference Address: Karlsruhe, GERMANY. Time:OCT 04-07, 2010.; In this study, 200 key Ne+ ion irradiations were performed under cryogenic conditions (similar to 77 K) on delta-phase oxide compounds with formula, A(4)Zr(3)O(12) (A = Sc, Lu and Dy). An order-to-disorder (O-D) phase transformation was observed in delta-Lu4Zr3O12 and delta-Sc4Zr3O12 after Ne+ ion irradiation, but no phase change was observed in Dy4Zr3O12. The latter compound exhibited a disordered fluorite structure before and after irradiation. The threshold doses to produce O-D phase transformations using Ne+ ions were found to be significantly lower than for similar irradiations (reported previously) using Kr++ ions. This suggests that light ions are more efficient than heavy ions in producing the retained defects that are ultimately responsible for the observed O-D transformation. The ion irradiation-induced O-D transformations observed here are discussed in terms of analogous transformations found in temperature-composition (T-C) phase diagrams for A(4)Zr(3)O(12) compounds. (C) 2011 Elsevier B.V. All rights reserved.
语种	英语
出处	http://dx.doi.org/10.1016/j.jnucmat.2011.08.004
出版者	J NUCL MATER
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/85681]
专题	能源院－会议论文
推荐引用方式 GB/T 7714	Zhang, J.,Wang, Y. Q.,Valdez, J. A.,et al. Irradiation induced order-disorder phase transformation in A(4)Zr(3)O(12) (A = Sc, Lu and Dy). 2011-12-01.

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