EPR and crystal-field analysis of Yb 3+ ions in Bi 4 Ge 3 O 12 single crystals
EPR and crystal-field analysis of Yb 3+ ions in Bi 4 Ge 3 O 12 single crystals
复制标题
Bi 4 Ge 3 O 12 单晶中Yb 3 离子的EPR和晶体场分析
DOI：
10.1103/physrevb.58.39
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发表时间：
1998
影响因子：
3.7
通讯作者：
F. López
中科院分区：
文献类型：
--
作者：
D. Bravo;F. López
The X-band electron-paramagnetic-resonance study at 5 K of ${\mathrm{Yb}}^{3+}$ ions in ${\mathrm{Bi}}_{4}{\mathrm{Ge}}_{3}{\mathrm{O}}_{12}$ single crystals is reported. The spectra are attributed to a unique center of ${\mathrm{Yb}}^{3+}$ located at the ${\mathrm{Bi}}^{3+}$ site. Moreover, a crystal-field analysis of ${\mathrm{Yb}}^{3+}$ in ${\mathrm{Bi}}_{4}{\mathrm{Ge}}_{3}{\mathrm{O}}_{12}$ has been carried out using the existing energy-level scheme and the $g$-factor values here determined. In this way, a set of ${B}_{n}^{m}$ crystal-field parameters for ${C}_{3}$ symmetry has been obtained. This set is compared to that extrapolated for ${\mathrm{Yb}}^{3+}$ from the fitted ${B}_{n}^{m}$ sets of ${\mathrm{Nd}}^{3+}$ and ${\mathrm{Er}}^{3+}$ in ${\mathrm{Bi}}_{4}{\mathrm{Ge}}_{3}{\mathrm{O}}_{12}.$ The most significant differences are found for the sixth-rank ${B}_{n}^{m}$ parameters.
