VIBRONIC TRANSITIONS IN THE EMISSION-SPECTRA OF GD3+ IN SEVERAL RARE-EARTH COMPOUNDS

被引：40

作者：

SYTSMA, J

VANSCHAIK, W

BLASSE, G

机构：

[1] Debye Research Institute, University of Utrecht, 3508 TA Utrecht

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1991年 / 52卷 / 02期

关键词：

GD3+ SPECTROSCOPY; VIBRONICS; TRANSITION PROBABILITIES; POLARIZABILITY;

D O I：

10.1016/0022-3697(91)90093-F

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Vibronic transition probabilities A(vib) in the emission spectra of Gd3+ in LaF3, LiYF4, LaAlO3, and La2O3 are reported. Data for Cs2 NaGdCl6 and YOCl, obtained from the literature, are also discussed. The vibronic transition probabilities vary by two orders of magnitude: from A(vib) = 2 s-1 to A(vib) = 114 s-1 for the 6P7/2 --> 8S7/2 transition of Gd3+ in LaF3 and YOCl, respectively. The difference is mainly due to differences in the polarizability of the ligands of Gd3+. The Stokes vibronic transition probability in the 6P7/2 --> 8S7/2 transition in LaAlO3:Gd3+ and the anti-Stokes vibronic transition probability in 6P7/2 --> 8S7/2 transition in LiYF4:Gd3+ are measured as a function of temperature. The temperature dependence is in agreement with existing theories.

引用

页码：419 / 429

页数：11

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