Theoretical investigations on the local structures and the g factors of three Ni3+ centers in LaSrAl1-xNixO4
文献类型：期刊论文
| 作者 | S. Y. Wu ; X. Y. Gao ; J. Z. Lin ; Q. Fu |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2006 |
| 卷号 | 424期号:1-2页码:55-59 |
| 关键词 | defect structures electron paramagnetic resonance crystal-fields and spin Hamiltonians Ni3+ LaSrAl1-xNixO4 (LSAN) transition-metal ions optical-spectra brillouin-scattering superposition model single-crystals cr3+ ions srlaalo4 vacancy epr |
| ISSN号 | 0925-8388 |
| 中文摘要 | The local structures and the EPR g factors of three Ni3+ centers (1)-(3) in LaSrAl1-xNixO4 (LSAN) are theoretically investigated from the perturbation formulas of the g factors for a 3d(7) ion of low spin (S = 1/2) in tetragonally and orthorhombically distorted octahedra. In these formulas, the contributions to the g factors from the low symmetrical parts of the crystal-fields, characterized by the crystal-field parameters D-s, D-t, D-xi and D-eta are taken into account. Based on the studies, it is found that the ligand octahedra are elongated along [0 0 1] axis by about 0.9, 0.7 and 1.0% for centers (1)-(3). The above distortions have a Jahn-Teller nature instead of ordinary lattice deformation, leading to the ligand octahedra less elongated than that (approximate to 1.3%) in the host. Apart from the axial elongation, center (3) suffers additional orthorhombic distortion due to inequivalent variation by about +/- 0.3% of the planar bonding lengths along [10 0] and [0 101 axes, respectively. The calculated g factors show good agreement with the observed values. (c) 2006 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34580]  |
| 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 | S. Y. Wu,X. Y. Gao,J. Z. Lin,et al. Theoretical investigations on the local structures and the g factors of three Ni3+ centers in LaSrAl1-xNixO4[J]. Journal of Alloys and Compounds,2006,424(1-2):55-59. |
| APA | S. Y. Wu,X. Y. Gao,J. Z. Lin,&Q. Fu.(2006).Theoretical investigations on the local structures and the g factors of three Ni3+ centers in LaSrAl1-xNixO4.Journal of Alloys and Compounds,424(1-2),55-59. |
| MLA | S. Y. Wu,et al."Theoretical investigations on the local structures and the g factors of three Ni3+ centers in LaSrAl1-xNixO4".Journal of Alloys and Compounds 424.1-2(2006):55-59. |
入库方式： OAI收割
来源：金属研究所
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