کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1236982 | 1495291 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigations of the spin-Hamiltonian parameters for Er3+ at the Th4+ site in ThGeO4
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The spin-Hamiltonian (SH) parameters g factors gâ¥, g⥠and the hyperfine structure parameters A⥠and A⥠for Er3+ at the tetragonally distorted dodecahedral Th4+ site in ThGeO4 are theoretically investigated by using the perturbation formulas of the SH parameters for a 4f11 ion in tetragonal symmetry. In these formulas, the contributions to the SH parameters from the second-order perturbation terms and the admixture of various energy levels are taken into account. The related crystal-field parameters are calculated from the geometrical relationship of the impurity center and the superposition model. Based on the studies, the lowest Kramers doublet is found to be Î7, rather than Î6 suggested in the previous work. The calculated SH parameters for Î7 doublet in this work are smaller than those obtained for Î6 doublet in the previous work and in good agreement with the observed values. The various contributions to the SH parameters are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 61, Issues 13â14, October 2005, Pages 2886-2890
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 61, Issues 13â14, October 2005, Pages 2886-2890
نویسندگان
Shao-Yi Wu, Hui-Ning Dong, Wang-He Wei,