The mechanical relaxation study of polycrystalline MgC1-xNi3

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	The mechanical relaxation study of polycrystalline MgC1-xNi3
	Yao, YX ; Ying, XN ; Huang, YN ; Wang, YN ; Ren, ZA ; Che, GC ; Wen, HH ; Zhao, ZX ; Ding, JW
刊名	SUPERCONDUCTOR SCIENCE & TECHNOLOGY
	2004
卷号	17 期号:4 页码:608
关键词	SUPERCONDUCTIVITY TEMPERATURE DEPENDENCE MGCXNI3 MGCNI3
ISSN号	0953-2048
通讯作者	Huang, YN (reprint author), Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.
中文摘要	The fenntosecond time-resolved difference absorption spectra of all-trans-A Apo-8'-carotenal have been recorded and analyzed by the singular-value decomposition (SVID) method followed by global fitting using a sequential model for the excited-state energy relaxation. With this model, we have obtained the excited-state absorption spectra and the lifetimes of the corresponding excited states both in nonpolar solvent n-hexane and polar solvent methanol. Three excited states, namely S-3(190fs), S-2(2.32ps) and S-1 (26ps) in n-hexane, and two excited states S-2(190fs) and S-1(9.4ps) in methanol have been observed. The excited-state absorption spectra of all-trans-beta-Apo-8'-carotenal in methanol display a red shift and broadeness, while the lifetime of S, state becomes shorter. It is proposed that these effects are related to the presence of a carbonyl functional group that leads to the solvent effect on the excited-state energy level. At the same time, it is shown that the SVD method is a useful tool in resolving the time-resolved absorption spectra.
收录类别	SCI
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/45322]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Yao, YX,Ying, XN,Huang, YN,et al. The mechanical relaxation study of polycrystalline MgC1-xNi3[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2004,17(4):608.
APA	Yao, YX.,Ying, XN.,Huang, YN.,Wang, YN.,Ren, ZA.,...&Ding, JW.(2004).The mechanical relaxation study of polycrystalline MgC1-xNi3.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,17(4),608.
MLA	Yao, YX,et al."The mechanical relaxation study of polycrystalline MgC1-xNi3".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 17.4(2004):608.