The pressure-induced shifts of energy spectra of ZnSe : Ni2+

IMR OpenIR

	The pressure-induced shifts of energy spectra of ZnSe : Ni2+
	D. P. Ma; J. R. Chen; N. Ma
	2001
发表期刊	Communications in Theoretical Physics
ISSN	0253-6102
卷号	35 期号:2 页码:251-256
摘要	The calculations of the whole energy spectrum of ZnSe:Ni2+ at normal pressure and pressure-induced shifts of its levels have been carried out on the basis of the theory of pressure-induced shifts and the diagonalization of the complete d(8) energy matrix in a regular tetrahedral field. The calculated results are in very good agreement with experimental data at normal and various pressures. By taking into account the pressure-induced shifts of spectral bands, the new assignments of bands are given. The comparison between the results of ZnSe:Ni2+ and MgO:Ni2+ shows that the covalency of the bonding between Ni2+ and ligands (Se2-) in ZnSe:Ni2+ is obviously stronger than the one of the bonding between Ni2+ and ligands (O2-) in MgO:Ni2+; the expansion of electron wavefunctions of Ni2+ in ZnSe:Ni2+ under pressure is obviously larger than that of Ni2+ in MgO:Ni2+ under pressure. On the basis of these results, the physical origins of the remarkable difference between the pressure-induced shifts of levels of ZnSe:Ni2+ and those of MgO:Ni2+ are explained. It is found that the large expansion of electron wavefunctions and a phase transition of ZnSe:Ni2+ make the pressure-induced shifts of levels of ZnSe:Ni2+ strongly nonlinear.
部门归属	sichuan univ, dept appl phys, chengdu 610065, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. sichuan univ, dept comp sci, chengdu 610064, peoples r china.;ma, dp (reprint author), sichuan univ, dept appl phys, chengdu 610065, peoples r china
关键词	High Pressure Effect Ligand Field Energy Spectra D-d Transition Band Shift Znse : Ni2++ Theoretical Calculations Ruby Znse Dependence Absorption Ni
URL	查看原文
WOS记录号	WOS:000168090500023
引用统计	被引频次：1[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/321006/36747
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. P. Ma,J. R. Chen,N. Ma. The pressure-induced shifts of energy spectra of ZnSe : Ni2+[J]. Communications in Theoretical Physics,2001,35(2):251-256.
APA	D. P. Ma,J. R. Chen,&N. Ma.(2001).The pressure-induced shifts of energy spectra of ZnSe : Ni2+.Communications in Theoretical Physics,35(2),251-256.
MLA	D. P. Ma,et al."The pressure-induced shifts of energy spectra of ZnSe : Ni2+".Communications in Theoretical Physics 35.2(2001):251-256.