Microscopic theoretical calculations of R-line thermal shifts and broadenings of Mgo : Cr3+

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	Microscopic theoretical calculations of R-line thermal shifts and broadenings of Mgo : Cr3+
	D. P. Ma; Y. Y. Liu; N. Ma; J. R. Chen
	2002
发表期刊	Communications in Theoretical Physics
ISSN	0253-6102
卷号	37 期号:3 页码:373-380
摘要	By taking into account all the irreducible representations and their components in the electron-phonon interaction (EPI) as well as all the levels and the admixtures of basic wavefunctions within d(3) electronic configuration, the values of all the parameters in the expressions of thermal shift (TS) and thermal broadening (TB) due to EPI for the ground level, R level and R line of MgO:Cr3+ have microscopically been evaluated; and then, TS and TB of R line and various contributions to them have uniformly been calculated. The results are in very good agreement with the experimental data. It is found that all the three terms of TS due to EPI are red shifts; the Raman term is the largest one, and the optical-branch term and neighbor-level term are important for TS; the contribution to TS from thermal expansion is blue shift, which is also important. The R-line TS Of Mgo:Cr3+ comes from the first-order term of EPI. The elastic Raman scattering of acoustic phonons plays a dominant role in R-line TB of MgO:Cr3+. For both TS and TB, it is very important to take into account all the admixtures of basic wavefunctions within d(3) electronic configuration.
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 Optical Properties Thermal Shift And Broadening Electron-phonon Interaction Thermal Expansion Sharp Lines Ruby Temperature
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WOS记录号	WOS:000174671700024
引用统计	被引频次：8[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/321006/36367
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. P. Ma,Y. Y. Liu,N. Ma,et al. Microscopic theoretical calculations of R-line thermal shifts and broadenings of Mgo : Cr3+[J]. Communications in Theoretical Physics,2002,37(3):373-380.
APA	D. P. Ma,Y. Y. Liu,N. Ma,&J. R. Chen.(2002).Microscopic theoretical calculations of R-line thermal shifts and broadenings of Mgo : Cr3+.Communications in Theoretical Physics,37(3),373-380.
MLA	D. P. Ma,et al."Microscopic theoretical calculations of R-line thermal shifts and broadenings of Mgo : Cr3+".Communications in Theoretical Physics 37.3(2002):373-380.