Local structure and valences of samariurn in SrB4O7 : Sm and SrB6O10 : Sm prepared in-air

	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
刊名	SOLID STATE SCIENCES
	2003
卷号	5 期号:3 页码:465-467
关键词	EXAFS valence samarium strontium tetraborate strontium hexaborate
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
英文摘要	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.
学科主题	Chemistry; Physics
类目[WOS]	Chemistry, Inorganic & Nuclear ; Chemistry, Physical ; Physics, Condensed Matter
研究领域[WOS]	Chemistry ; Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000182721500009
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/237592]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	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.