Pressure-induced shifts of energy spectra of alpha-Al2O3 : Mn4+

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	Pressure-induced shifts of energy spectra of alpha-Al2O3 : Mn4+
	D. P. Ma; J. R. Chen; N. Ma
	2002
发表期刊	Communications in Theoretical Physics
ISSN	0253-6102
卷号	37 期号:1 页码:111-116
摘要	By making use of the diagonalization of the complete d(3) energy matrix in a trigonally distorted cubic-field and the theory of pressure-induced shifts (PS) of energy spectra, the whole energy spectrum of alpha-Al2O3:Mn4+ and PS of levels have been calculated. All the calculated results are in excellent agreement with the experimental data. The comparison between the results of alpha-Al2O3:Mn4+ and ruby has been made. It is found that on one hand, R-1-line and R-2-line PS of alpha-Al2O3:Mn4+ and ruby are linear in pressure over 0 similar to 100 kbar, and their values of the principal parameter for PS are very close to each other. On the other hand, the sensitivities of R-1-line and R-2-line PS of alpha-Al2O3:Mn4+ axe higher than those of ruby respectively, which comes mainly from the difference between the values of parameters at normal pressure of two crystals; moreover, the expansion of d-electron wavefunctions of alpha-Al2O3:Mn4+ with compression is slightly larger than the one of ruby, and the effective charge experienced by d-electrons of alpha-Al2O3:Mn4+ decreases with compression more rapidly than the one of ruby. In the final analysis, all these can be explained in terms of the facts that the two crystals are doped alpha-Al2O3 with two isoelectronic ions; the strengths of the crystal field and covalency of alpha-Al2O3:Mn4+ are larger than those of ruby respectively, due to the charge of Mn4+ to be larger than that of Cr3+.
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	Crystal Fields Energy Spectrum Optical Properties High-pressure Effect Alpha-al2o3 : Mn4++ Theoretical Calculations Ruby Luminescence
URL	查看原文
WOS记录号	WOS:000173520200020
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/321006/36365
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. Pressure-induced shifts of energy spectra of alpha-Al2O3 : Mn4+[J]. Communications in Theoretical Physics,2002,37(1):111-116.
APA	D. P. Ma,J. R. Chen,&N. Ma.(2002).Pressure-induced shifts of energy spectra of alpha-Al2O3 : Mn4+.Communications in Theoretical Physics,37(1),111-116.
MLA	D. P. Ma,et al."Pressure-induced shifts of energy spectra of alpha-Al2O3 : Mn4+".Communications in Theoretical Physics 37.1(2002):111-116.