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
刊名	Communications in Theoretical Physics
	2002
卷号	37 期号:3 页码:373-380
关键词	crystal fields optical properties thermal shift and broadening electron-phonon interaction thermal expansion sharp lines ruby temperature
ISSN号	0253-6102
中文摘要	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.
原文出处	://WOS:000174671700024
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/36367]
专题	金属研究所_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.