Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ III: R-line thermal shifts of SrTiO3 : Mn4+

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	Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ III: R-line thermal shifts of SrTiO3 : Mn4+
	D. P. Ma; J. P. Zhang
	2001
发表期刊	Communications in Theoretical Physics
ISSN	0253-6102
卷号	36 期号:4 页码:463-468
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 the parameters in the expressions of thermal shift (TS) from EPI for the ground level, R level and R line of SrTiO3:Mn4+ have been evaluated; the R-line TS and various contributions to it have been calculated in the low-temperature region. It is found that all the three terms of R-line TS from EPI relevant to the lattice vibration are red shifts. The Raman term is the largest, the neighbor-level term is the second, and the optical-branch term is very small over the range of T less than or equal to 80 K. The contribution to R-line TS from thermal expansion has been approximately neglected in this work. The very strong EPI relevant to its lattice vibration for SrTiO3:Mn4+ causes its R-Line TS to be an unusually large red-shift. Only by taking into account the strong softening of the low-frequency acoustic modes of the lattice vibration at low temperatures, can we successfully explain the variation of R-line TS of SrTiO3:Mn4+ with temperature.
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.;ma, dp (reprint author), sichuan univ, dept appl phys, chengdu 610065, peoples r china
关键词	Crystal Fields Optical Properties Electron-phonon Interaction Thermal Shift SOftening Of Acoustic Modes
URL	查看原文
WOS记录号	WOS:000171953600018
引用统计	被引频次：11[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/321006/36751
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. P. Zhang. Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ III: R-line thermal shifts of SrTiO3 : Mn4+[J]. Communications in Theoretical Physics,2001,36(4):463-468.
APA	D. P. Ma,&J. P. Zhang.(2001).Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ III: R-line thermal shifts of SrTiO3 : Mn4+.Communications in Theoretical Physics,36(4),463-468.
MLA	D. P. Ma,et al."Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ III: R-line thermal shifts of SrTiO3 : Mn4+".Communications in Theoretical Physics 36.4(2001):463-468.