Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ IV: R-line thermal shifts of SrTiO3 : Cr3+
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:5页码:601-610 |
| 关键词 | crystal fields optical properties thermal shift electron-phonon interaction impurity modes softening and hardening |
| ISSN号 | 0253-6102 |
| 中文摘要 | The local impurity-vibration modes (especially, the low-frequency one) of SrTiO3:Cr3+ cause a very large R-line blue-shift; while the Raman term, neighbor-level term and optical-branch term relevant to the lattice vibration cause small red shifts. The algebraic sum of them gives rise to the observed unusual and large R-line thermal shift (blue-shift) of SrTiO3:Cr3+. 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:Cr3+ have been evaluated; the R-line TS and various contributions to it have been calculated in two temperature ranges (30 K less than or equal to T less than or equal to 80 K and 130 K less than or equal to T less than or equal to 300 K). The contribution to R-line TS from thermal expansion has been approximately neglected in this work. Furthermore, the improvement on simplified approximation of adopting a single low-frequency impurity-mode and neglecting its hardening in low-temperature region has been made. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36750]  |
| 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+ IV: R-line thermal shifts of SrTiO3 : Cr3+[J]. Communications in Theoretical Physics,2001,36(5):601-610. |
| 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+ IV: R-line thermal shifts of SrTiO3 : Cr3+.Communications in Theoretical Physics,36(5),601-610. |
| MLA | D. P. Ma,et al."Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ IV: R-line thermal shifts of SrTiO3 : Cr3+".Communications in Theoretical Physics 36.5(2001):601-610. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。