电子顺磁共振增强晶场分析低点群对称性体系:Sm $^{3+}$:CaF $_2$ / SrF $_2$中的C $_{2v}$位
Electron paramagnetic resonance enhanced crystal field analysis for low point-group symmetry systems: C$_{2v}$ sites in Sm$^{3+}$:CaF$_2$/SrF$_2$
摘要:
本文对Sm $^{3+}$:CaF $_2$ /SrF $_2$中的C $_{2v}$点群对称位置进行了光谱研究。数据包括电子顺磁共振测量塞曼和超精细相互作用的基态,以及现场选择性激发和荧光光谱的$^{4}$ G $_{5/2}$多重峰。包括EPR数据使我们能够确定独特的晶体场参数。这些参数提供了关于位点的几何形状和Sm $^{3+}$掺杂剂与碱土共掺杂剂之间的相互作用的性质的信息。
英文摘要:
We present a comprehensive spectroscopic study of C$_{2v}$ point-group symmetry sites in Sm$^{3+}$:CaF$_2$/SrF$_2$ codoped with either NaF or LiF. Data includes electron paramagnetic resonance measurements of Zeeman and hyperfine interactions for the ground state, as well as site-selective excitation and fluorescence spectroscopy up to the $^{4}$G$_{5/2}$ multiplet. Inclusion of the EPR data allowed us to determine unique crystal-field parameters. The parameters provide information about the geometry of the sites and the nature of the interactions between the Sm$^{3+}$ dopant and the alkaline earth co-dopant.
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