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Local structure of uranium in polycrystalline alpha-U2N3+delta film probed by X-ray absorption spectroscopy
Bao, HL; Zhong, HP; Hu, Y; Lin, J; Yu, HS; Ma, JY; Tang, ZF; Qian, Y; Huang, YY; Liu, KZ; Wang, JQ
2020
Source PublicationJOURNAL OF NUCLEAR MATERIALS
ISSN0022-3115
Volume542Pages:-
Subtype期刊论文
AbstractKnowledge of the local structure such as U-N interaction is a prerequisite for a better understanding of the physical and chemical properties of nitrogen-rich uranium nitrides. The local structure of U in polycrystalline alpha-U2N3+delta film was investigated by using X-ray absorption spectroscopy at the U L-3 edge combined with spectral calculation using FEFF 9.6 program based on the ab initio multiple scattering theory. The polycrystalline alpha-U2N3+delta sample was shown to be close to U2N3 with a narrow distribution of U-N bond lengths. The average valence of U was estimated to be 1.3 and the average bond distance of U-N was determined to be 2.30 A. The local structure of U in the alpha-U2N3+delta sample can be further specifically expressed by a U2N3 model with a lattice parameter of 10.69 (9) A where U1 atoms are surrounded by nitrogen atoms at similar to 2.277, similar to 2.295 and similar to 2.320 A. (C) 2020 Elsevier B.V. All rights reserved.
KeywordELECTRONIC-STRUCTURE NITROGEN NITRIDE PHASE METAL CARBIDES DENSITY OXIDES UN
DOI10.1016/j.jnucmat.2020.152404
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32981
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China
2.China Acad Engn Phys, Inst Mat, Mianyang 621907, Sichuan, Peoples R China
3.Chinese Acad Sci, Shanghai Adv Res Inst, Zhangjiang Lab, Shanghai Synchrotron Radiat Facil,SSRF,ZJLab, Shanghai 201204, Peoples R China
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GB/T 7714
Bao, HL,Zhong, HP,Hu, Y,et al. Local structure of uranium in polycrystalline alpha-U2N3+delta film probed by X-ray absorption spectroscopy[J]. JOURNAL OF NUCLEAR MATERIALS,2020,542:-.
APA Bao, HL.,Zhong, HP.,Hu, Y.,Lin, J.,Yu, HS.,...&Wang, JQ.(2020).Local structure of uranium in polycrystalline alpha-U2N3+delta film probed by X-ray absorption spectroscopy.JOURNAL OF NUCLEAR MATERIALS,542,-.
MLA Bao, HL,et al."Local structure of uranium in polycrystalline alpha-U2N3+delta film probed by X-ray absorption spectroscopy".JOURNAL OF NUCLEAR MATERIALS 542(2020):-.
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