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Local structure and valences of samariurn in SrB4O7 : Sm and SrB6O10 : Sm prepared in-air
Liang, HB; Zeng, QH; Hu TD(胡天斗); Hu, TD; Wang, SB; Su, Q
2003
发表期刊SOLID STATE SCIENCES
卷号5期号:3页码:465-467
通讯作者Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China ; Chinese Acad Sci, Changchun Inst Appl Chem, Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Lab Beijing Synchrotron Radiat, Beijing 100039, Peoples R China
摘要The coordination numbers for the samarium atoms and the Sm-O bond distances in SrB4O7:Sm and SrB6O10:Sm prepared in air were determined by means of Sm-L-3 edge EXAFS. The coordination. was found to be nine-folded for both these hosts and the bond distance was 2.40-2.42 Angstrom in SrB4O7:Sm and 2.42-2.44 Angstrom in SrB6O10:Sm. For SrB4O7:Sm the coordination number is coincident with that of the strontium. atoms suggesting the substitution of the samarium atoms at the strontium sites. The coordination number of the strontium atoms in SrB6O10 was also suggested to be nine assuming the same type of substitution. The valences of samarium were determined from the luminescent spectra. Both divalent and trivalent ions were present in both SrB4O7:Sm and SrB6O10:Sm, while the fraction of Sm2+ was higher in the former than in the latter. This difference has been assigned to the difference in rigidity between the B-O networks in these structures. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
文章类型Article
关键词EXAFS valence samarium strontium tetraborate strontium hexaborate
学科领域Chemistry; Physics
研究领域[WOS]Chemistry ; Physics
DOI10.1016/S1293-2558(03)00033-5
URL查看原文
语种英语
WOS类目Chemistry, Inorganic & Nuclear ; Chemistry, Physical ; Physics, Condensed Matter
WOS记录号WOS:000182721500009
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237592
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Liang, HB,Zeng, QH,Hu TD,et al. Local structure and valences of samariurn in SrB4O7 : Sm and SrB6O10 : Sm prepared in-air[J]. SOLID STATE SCIENCES,2003,5(3):465-467.
APA Liang, HB,Zeng, QH,胡天斗,Hu, TD,Wang, SB,&Su, Q.(2003).Local structure and valences of samariurn in SrB4O7 : Sm and SrB6O10 : Sm prepared in-air.SOLID STATE SCIENCES,5(3),465-467.
MLA Liang, HB,et al."Local structure and valences of samariurn in SrB4O7 : Sm and SrB6O10 : Sm prepared in-air".SOLID STATE SCIENCES 5.3(2003):465-467.
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