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Surface structure of alpha-Fe2O3 nanocrystal observed by OK-edge X-ray absorption spectroscopy
Zhang J(张静); Wu ZY(吴自玉); Kui RX(奎热西); Abbas; MI; Ju X(巨新); Zhang, J; Wu, ZY; Ibrahim, K; Abbas, MI; Ju, X
2003
Source PublicationNUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume199Pages:#REF!
Corresponding AuthorZhang, J (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Lab, Beijing 100039, Peoples R China.
SubtypeArticle; Proceedings Paper
AbstractX-ray absorption near edge structure (XANES) spectra is used as a probe of surface structure of alpha-Fe2O3 nanocrystal, prepared by sol-gel method. We present O K-edge XANES of alpha-Fe2O3 in nanocrystal and bulk by total electron yield at the photoemission station of Beijing Synchrotron Radiation Facility. The spectrum of alpha-Fe2O3 shows a splitting of the pre-edge structure, which is interpreted as two subsets of Fe 3d t(2g) and e(g) orbitals in oxygen octahedral (O-h) crystal field, and is also sensitive to long-range order effects. However, no distinguishable splitting of the pre-edge peak of nanocrystal alpha-Fe2O3 is observed. This suggests that there exists the distorted octahedral coordination around Fe sites and also the long-range disorder due to the surface as compared with bulk alpha-Fe2O3. (C) 2002 Elsevier Science B.V. All rights reserved.
KeywordOK-edge XANES surface structure alpha-Fe2O3 nanocrystal
Subject AreaInstruments & Instrumentation; Nuclear Science & Technology; Physics
DOI10.1016/S0168-583X(02)01576-8
Indexed BySCI
WOS SubjectInstruments & Instrumentation ; Nuclear Science & Technology ; Physics, Atomic, Molecular & Chemical ; Physics, Nuclear
WOS IDWOS:000180925400058
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/227452
Collection多学科研究中心
Recommended Citation
GB/T 7714
Zhang J,Wu ZY,Kui RX,et al. Surface structure of alpha-Fe2O3 nanocrystal observed by OK-edge X-ray absorption spectroscopy[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2003,199:#REF!.
APA 张静.,吴自玉.,奎热西.,Abbas.,MI.,...&Ju, X.(2003).Surface structure of alpha-Fe2O3 nanocrystal observed by OK-edge X-ray absorption spectroscopy.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,199,#REF!.
MLA 张静,et al."Surface structure of alpha-Fe2O3 nanocrystal observed by OK-edge X-ray absorption spectroscopy".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 199(2003):#REF!.
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