Defect structures for Fe3+, Mn2+, and Ni3+ impurities in wuritzite GaN crystals
文献类型：期刊论文
| 作者 | W. C. Zheng ; S. Y. Wu ; J. Zi |
| 刊名 | Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences
 |
| 出版日期 | 2001 |
| 卷号 | 56期号:6-7页码:473-477 |
| 关键词 | defect structure EPR crystal field theory GaN Fe3+ Mn2+ Ni3+ high-temperature pressure ions |
| ISSN号 | 0932-0784 |
| 中文摘要 | Electron paramagnetic resonance (EPR) zero-field splittings D for Mn2+ and Fe3+ in wurtzite GaN crystals are studied from high-order perturbation formulas based on the spin-orbit mechanism in both weak- and strong-field schemes. From these studies it can be seen that the Mn2+ or Fe3+ impurity does not occupy the exact Ga3+ position, but is displaced by DeltaR on the C-3 axis. The displacements are confirmed from a study of the superposition model, based on which a normal value of (b(2)) over bar (R-0) (approximate to -0.34 (15) cm(-1)) for the Fe3+-N3- combination is suggested. The EPR parameters D, g(parallel to) and g(perpendicular to) for Ni3+ in GaN crystals are also studied. It is found that Ni3+ is almost not displaced. The impurity displacements in GaN are discussed by considering the valences and radii of these impurity ions and the replaced Ga3+ ion. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36948]  |
| 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,S. Y. Wu,J. Zi. Defect structures for Fe3+, Mn2+, and Ni3+ impurities in wuritzite GaN crystals[J]. Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,2001,56(6-7):473-477. |
| APA | W. C. Zheng,S. Y. Wu,&J. Zi.(2001).Defect structures for Fe3+, Mn2+, and Ni3+ impurities in wuritzite GaN crystals.Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,56(6-7),473-477. |
| MLA | W. C. Zheng,et al."Defect structures for Fe3+, Mn2+, and Ni3+ impurities in wuritzite GaN crystals".Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences 56.6-7(2001):473-477. |
入库方式： OAI收割
来源：金属研究所
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