Spin-Hamiltonian parameters and defect structure for the rhombic Dy(3+) center in AgCl crystal
文献类型：期刊论文
| 作者 | W. C. Zheng ; W. Q. Yang ; H. G. Liu ; P. Su |
| 刊名 | Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
 |
| 出版日期 | 2011 |
| 卷号 | 78期号:1页码:343-346 |
| 关键词 | Electron paramagnetic resonance crystal- and ligand-field theory Defect structure AgCl Dy(3+) electron-paramagnetic-resonance silver-chloride microcrystals superposition-model analysis halide photographic process magnetic-resonance field ion epr complexes bromide |
| ISSN号 | 1386-1425 |
| 中文摘要 | Based on the defect model that the rhombic Dy(3+) center in AgCl crystal is formed by substitutional Dy(3+) ion associated with two nearest Ag(+) vacancies (V(Ag)) along the (1 1 0) and ((1) over tilde (1) over tilde 0) axes owing to charge compensation, the spin-Hamiltonian parameters (g factors g(i) and hyperfine structure constants (161)A(i) and (163)A(i), where i=x, y, z) of this rhombic Dy(3+) center are calculated from a diagonalization (of energy matrix) method. In the method, the Zeeman (or magnetic) and hyperfine interaction terms are attached to the classical Hamiltonian used in the calculation of crystal-field energy levels and a 66 x 66 energy matrix concerning this Hamiltonian is constructed by taking all the ground-term multiplets (6)H(J) (J=15/2, 13/2, 11/2, 9/2, 7/2, 5/2) into account. The calculated results (g factors & and average vertical bar A((161)Dy(3+))vertical bar and vertical bar(A) over bar((163)Dy(3+))vertical bar) are in reasonable agreement with the experimental values. From the calculations, the above defect model of rhombic Dy(3+) center is confirmed, the defect structure of this Dy(3+) center (characterized by the displacement of Cl(-) ligand caused by VAg) is obtained and the components of hyperfine structure constants A(i)((161)Dy(3+)) and A(i)((163)Dy(3+)) are predicted. The results are discussed. (c) 2010 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30975]  |
| 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 | W. C. Zheng,W. Q. Yang,H. G. Liu,et al. Spin-Hamiltonian parameters and defect structure for the rhombic Dy(3+) center in AgCl crystal[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2011,78(1):343-346. |
| APA | W. C. Zheng,W. Q. Yang,H. G. Liu,&P. Su.(2011).Spin-Hamiltonian parameters and defect structure for the rhombic Dy(3+) center in AgCl crystal.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,78(1),343-346. |
| MLA | W. C. Zheng,et al."Spin-Hamiltonian parameters and defect structure for the rhombic Dy(3+) center in AgCl crystal".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 78.1(2011):343-346. |
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来源：金属研究所
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