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+
文献类型：期刊论文
| 作者 | D. P. Ma ; J. P. Zhang |
| 刊名 | Communications in Theoretical Physics
 |
| 出版日期 | 2001 |
| 卷号 | 36期号:4页码:463-468 |
| 关键词 | crystal fields optical properties electron-phonon interaction thermal shift softening of acoustic modes |
| 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 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. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36751]  |
| 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,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. |
入库方式： OAI收割
来源：金属研究所
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