| EPR parameters and defect structures for the Co2+ ions in LiNbO3 and LiTaO3 crystals | |
| M. Yang; W. Xiao-Xuan; Z. Wen-Chen | |
| 2008 | |
| Source Publication | Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
 |
| ISSN | 1386-1425 |
| Volume | 71Issue:2Pages:714-719 |
| Abstract | The electron paramagnetic resonance (EPR) parameters (g factors g parallel to, g perpendicular to and hyperfine structure constants A parallel to, A perpendicular to) for Co2+ ions in LiNbO3 and LiTaO3 crystals are calculated from the second-order perturbation formulas based on the cluster approach for 3d(7) ions in trigonal octahedral clusters. The calculated results are in reasonable agreement with the experimental values. From the calculations, the negative sign of All for Co2+, in the two crystals and the more exact and rational values of A parallel to for Co2+ in LiTaO3 are suggested. The defect structures (characterized by the Co2+ displacement Delta Z along C-3 axis and the O2- displacement Delta X in an oxygen triangle towards the center of the triangle) for the Co2+ centers in both crystals are estimated. The results are discussed. (c) 2008 Elsevier B.V. All rights reserved. |
| description.department | [yang, mei; wen-chen, zheng] sichuan univ, dept mat sci, chengdu 610064, peoples r china. [xiao-xuan, wu] civil aviat flight univ china, dept phys, guanghan 618307, peoples r china. [wen-chen, zheng] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;wen-chen, z (reprint author), sichuan univ, dept mat sci, chengdu 610064, peoples r china;zhengwc1@163.com |
| Keyword | Electron Paramagnetic Resonance Defect Structure Crystal- And Ligand-field Theory Co2++ Linbo3 Litao3 Electron-paramagnetic-resonance Atomic Screening Constants Lithium-niobate Optical-spectra Scf Functions Lattice Oscillator Impurity |
| URL | 查看原文 |
| WOS ID | WOS:000261046200067 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/33274 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | M. Yang,W. Xiao-Xuan,Z. Wen-Chen. EPR parameters and defect structures for the Co2+ ions in LiNbO3 and LiTaO3 crystals[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2008,71(2):714-719. |
| APA | M. Yang,W. Xiao-Xuan,&Z. Wen-Chen.(2008).EPR parameters and defect structures for the Co2+ ions in LiNbO3 and LiTaO3 crystals.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,71(2),714-719. |
| MLA | M. Yang,et al."EPR parameters and defect structures for the Co2+ ions in LiNbO3 and LiTaO3 crystals".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 71.2(2008):714-719. |
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