Structural and magnetic properties of Zn1-xCoxO (0 < x <= 0.30) nanoparticles
文献类型：期刊论文
| 作者 | L. B. Duan ; W. G. Chu ; J. Yu ; Y. C. Wang ; L. N. Zhang ; G. Y. Liu ; J. K. Liang ; G. H. Rao |
| 刊名 | Journal of Magnetism and Magnetic Materials
 |
| 出版日期 | 2008 |
| 卷号 | 320期号:8页码:1573-1581 |
| 关键词 | diluted magnetic semiconductors crystal structure magnetization cation percolation co-doped zno temperature ferromagnetism semiconductors exchange origin films |
| ISSN号 | 0304-8853 |
| 中文摘要 | We present a systematic investigation on the structural and magnetic properties of Zn1-xCoxO nanoparticles synthesized by an auto-combustion method. The single-phase Zn1-xCoxO crystallize in the wurtzite-type structure with a homogeneity range as large as x approximate to 0.30, which enables the observation of some anomalies. The lattice parameter a and the unit cell volume V increase with the Co content, and anomalies are discernable around x = 0.15 on the a-x and V-x curves. The magnetization data show no evidence of ferromagnetic ( FM) ordering in our samples down to T 5K, and the magnetization at 5K and 5T exhibits a maximum around x 0.125. Based on the detailed analysis of the magnetization data and the donor impurity band exchange model, the anomalies on composition dependence of both the lattice parameters and magnetization can be associated with an occurrence of cation percolation around the threshold x(p) (approximate to 1.5/Z = 0.125 for three-dimensional lattice with coordination number Z = 12). Within the framework of the donor impurity band exchange model, the absence of FM in the well-characterized Zn1-xCoxO can be attributed to insufficient donor electron concentration. (c) 2008 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/321006/32728]  |
| 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 | L. B. Duan,W. G. Chu,J. Yu,et al. Structural and magnetic properties of Zn1-xCoxO (0 < x <= 0.30) nanoparticles[J]. Journal of Magnetism and Magnetic Materials,2008,320(8):1573-1581. |
| APA | L. B. Duan.,W. G. Chu.,J. Yu.,Y. C. Wang.,L. N. Zhang.,...&G. H. Rao.(2008).Structural and magnetic properties of Zn1-xCoxO (0 < x <= 0.30) nanoparticles.Journal of Magnetism and Magnetic Materials,320(8),1573-1581. |
| MLA | L. B. Duan,et al."Structural and magnetic properties of Zn1-xCoxO (0 < x <= 0.30) nanoparticles".Journal of Magnetism and Magnetic Materials 320.8(2008):1573-1581. |
入库方式： OAI收割
来源：金属研究所
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