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Phase stability of pre-irradiated CeO2 with swift heavy ions under high pressure up to 45 GPa

文献类型：期刊论文

作者Lan, Jianxiong1,2; Zhai, Pengfei1,2; Nan, Shuai3; Xu, Lijun2; Niu, Jingjing3; Tian, Cheng1,2; Li, Zongzhen2; Li, Weixing3; Liu, Jie1,2; Ewing, Rodney Charles4
刊名JOURNAL OF THE AMERICAN CERAMIC SOCIETY
出版日期2021-12-18
页码14
ISSN号0002-7820
关键词CeO2 dislocation loops high pressure high-temperature annealing swift heavy ions
DOI10.1111/jace.18273
通讯作者Zhai, Pengfei(zhaipengfei@impcas.ac.cn)
英文摘要The effect of defects on the high-pressure behavior of materials is fundamental to understanding and designing materials for extreme environments. Previous work has demonstrated that radiation damage can enhance phase stability or alter the transformation pathway. Here, we report the high-pressure phase stability of CeO2 irradiated by swift heavy ions. CeO2 is of particular interest because it can be used as a non-radioactive surrogate for UO2 and PuO2. High-pressure Raman spectroscopy shows that low-fluence ion irradiated CeO2 exhibits nearly the same high-pressure behavior as unirradiated CeO2; whereas, after high-fluence irradiation, the phase stability of CeO2 is significantly enhanced, with the critical phase transition pressure increased from 31.7 to 37.3 GPa and only about 7% high-pressure phase transition fraction at 45.1 GPa. In comparison with the high-pressure Raman results of pre-irradiated CeO2 before and after 573, 1073, and 1 273 K annealing in air, we propose that large interstitial-type defect clusters, such as dislocation loops formed in heavily-irradiated CeO2, are predominately responsible for the increased phase stability at high pressures.
WOS关键词X-RAY-DIFFRACTION ; OPTICAL-PROPERTIES ; DISLOCATION LOOPS ; RAMAN-SCATTERING ; GRAIN-SIZE ; TRACKS ; TRANSFORMATION ; DAMAGE ; ACCUMULATION ; BEHAVIOR
资助项目National Natural Science Foundation of China[12075290] ; National Natural Science Foundation of China[12035019] ; National Natural Science Foundation of China[11690041] ; National Natural Science Foundation of China[11405229] ; Chinese Academy of Sciences Light ofWest China Program ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2020412] ; Key Laboratory of Silicon Device and Technology, Chinese Academy of Sciences[KLSDTJJ2019-06]
WOS研究方向Materials Science
语种英语
出版者WILEY
WOS记录号WOS:000731328600001
资助机构National Natural Science Foundation of China ; Chinese Academy of Sciences Light ofWest China Program ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Key Laboratory of Silicon Device and Technology, Chinese Academy of Sciences
源URL[http://119.78.100.186/handle/113462/140087]  
专题中国科学院近代物理研究所
通讯作者Zhai, Pengfei
作者单位1.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resource, Beijing, Peoples R China
4.Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA
推荐引用方式
GB/T 7714		 Lan, Jianxiong,Zhai, Pengfei,Nan, Shuai,et al. Phase stability of pre-irradiated CeO2 with swift heavy ions under high pressure up to 45 GPa[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2021:14.
APA Lan, Jianxiong.,Zhai, Pengfei.,Nan, Shuai.,Xu, Lijun.,Niu, Jingjing.,...&Ewing, Rodney Charles.(2021).Phase stability of pre-irradiated CeO2 with swift heavy ions under high pressure up to 45 GPa.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,14.
MLA Lan, Jianxiong,et al."Phase stability of pre-irradiated CeO2 with swift heavy ions under high pressure up to 45 GPa".JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2021):14.

入库方式： OAI收割

来源：近代物理研究所

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