EPR and optical spectra of Ni2+-VAg in silver chloride and silver bromide

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	EPR and optical spectra of Ni2+-VAg in silver chloride and silver bromide
	H. Q. Wang; X. Y. Kuang; H. F. Li
	2009
发表期刊	Molecular Physics
ISSN	0026-8976
卷号	107 期号:7 页码:621-627
摘要	The optical absorption and EPR spectra of Ni2+-VAg centres in the AgCl:Ni2+ and AgBr:Ni2+ systems have been investigated theoretically on the basis of the complete energy matrices including the electron-electron repulsion interaction, the ligand field interaction, the spin-orbit coupling interaction, and Zeeman interaction. Because the charge compensation forms a silver ion vacancy (VAg) which makes the attractive force acted on the each ligand ion different, it was determined that the Ni-X (X = Cl, Br) distance next to VAg is shorter than others for both AgCl:Ni2+ and AgBr:Ni2+ systems in the tetragonal symmetry. Besides, it was found that the local lattice structure of (NiX6)4- clusters in AgCl and AgBr crystals exhibit a compression distortion. This compression distortion may be ascribed to the fact that the Ni2+ ion has a smaller ionic radius and more effective charge than the Ag+ ion.
部门归属	[wang, huai-qian; kuang, xiao-yu; li, hui-fang] sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china. [kuang, xiao-yu] acad sinica, int ctr mat phys, shenyang 110016, peoples r china.;kuang, xy (reprint author), sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china;scu_whq@163.com
关键词	Local Lattice Structure Complete Energy Matrices Epr And Optical Spectra Laser-light Generation Color Image-formation Local Structures Agcl Centers Agbr Crystals Coordination Nickel Field
URL	查看原文
WOS记录号	WOS:000266199000002
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32352
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Q. Wang,X. Y. Kuang,H. F. Li. EPR and optical spectra of Ni2+-VAg in silver chloride and silver bromide[J]. Molecular Physics,2009,107(7):621-627.
APA	H. Q. Wang,X. Y. Kuang,&H. F. Li.(2009).EPR and optical spectra of Ni2+-VAg in silver chloride and silver bromide.Molecular Physics,107(7),621-627.
MLA	H. Q. Wang,et al."EPR and optical spectra of Ni2+-VAg in silver chloride and silver bromide".Molecular Physics 107.7(2009):621-627.