EPR spectra and local lattice structure of Fe3+ impurity ions in ferroelectric LiNbO3
文献类型：期刊论文
| 作者 | W. Hui ; K. Xiao-Yu ; D. Dong ; T. Xiao-Ming ; Y. Xiong |
| 刊名 | Chemical Physics
 |
| 出版日期 | 2006 |
| 卷号 | 330期号:1-2页码:212-215 |
| 关键词 | EPR and optical spectra LiNbO3 : Fe3+ system local lattice structure lithium-niobate single-crystals doped linbo3 fe-3+ resonance site substitution coordination field model |
| ISSN号 | 0301-0104 |
| 中文摘要 | The optical absorption and EPR spectra of Fe3+ impurity ions doped in near stoichiometric LiNbO3 crystal are studied by diagonalizing the complete energy matrices for a d(5) configuration ion in a trigonal ligand-field. By analyzing the optical absorption and EPR spectra simultaneously, the distortion parameters Delta theta(1) = 3.42 degrees, Delta theta(2) = -7.22 degrees are determined for Li+ substitutional position supported by ENDOR experiments. The theoretical results indicate that there exists a compressed distortion in LiNbO3:Fe3+ system, which may be ascribed to the fact that the radius of Fe3+ ion is slightly smaller than that of the host ion. Meanwhile, the local structure parameters R-1 = 2.08A, R-2 = 1.91A, theta(1) = 47.99 degrees and theta(2) = 62.52 degrees for the octahedral Fe3+ center in LiNbO3 crystal are also determined, which are close to that of the alpha Fe2O3. The calculated transition energies of octahedral Fe3+ center in LiNbO3 are in good agreement with those of Fe3+ cations in other oxides due to the similar octahedral (FeO6)(9-) cluster. (c) 2006 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34262]  |
| 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. Hui,K. Xiao-Yu,D. Dong,et al. EPR spectra and local lattice structure of Fe3+ impurity ions in ferroelectric LiNbO3[J]. Chemical Physics,2006,330(1-2):212-215. |
| APA | W. Hui,K. Xiao-Yu,D. Dong,T. Xiao-Ming,&Y. Xiong.(2006).EPR spectra and local lattice structure of Fe3+ impurity ions in ferroelectric LiNbO3.Chemical Physics,330(1-2),212-215. |
| MLA | W. Hui,et al."EPR spectra and local lattice structure of Fe3+ impurity ions in ferroelectric LiNbO3".Chemical Physics 330.1-2(2006):212-215. |
入库方式： OAI收割
来源：金属研究所
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