Structural and magnetic properties of Mn nanoparticles prepared by arc-discharge
文献类型：期刊论文
| 作者 | P. Z. Si ; E. Bruck ; Z. D. Zhang ; O. Tegus ; W. S. Zhang ; K. H. J. Buschow ; J. C. P. Klaasse |
| 刊名 | Materials Research Bulletin
 |
| 出版日期 | 2005 |
| 卷号 | 40期号:1页码:29-37 |
| 关键词 | magnetic materials nanostructures X-ray diffraction magnetic properties gamma-fe2o3 nanoparticles nanocapsules manganese transition particles clusters methane lattice mn3o4 |
| ISSN号 | 0025-5408 |
| 中文摘要 | Mn nanoparticles are prepared by arc discharge technique. MnO, alpha-Mn, beta-Mn, and gamma-Mn are detected by X-ray diffraction, while the presence of Mn3O4 and MnO2 is revealed by X-ray photoelectron spectroscopy. Transmission electron microscopy observations show that most of the Mn nanoparticles have irregular shapes, rough surfaces and a shell/core structure, with sizes ranging from several nanometers to 80 nm. The magnetic properties of the Mn nanoparticles are investigated between 2 and 350 K at magnetic fields up to 5 T. A magnetic transition occurring near 43 K is attributed to the formation of the ferrimagnetic Mn3O4. The coercivity of the Mn nanoparticles, arising mainly from Mn3O4, decreases linearly with increasing temperature below 40 K. Below the blocking temperature T-B approximate to 34 K, the hysteresis loops exhibit large coercivity (up to 500 kA/m), owing to finite size effects, and irreversibility in the loops is found up to 4 T, and magnetization is not saturated up to 5 T. The relationship between structure and the magnetic properties are discussed. (C) 2004 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35031]  |
| 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 | P. Z. Si,E. Bruck,Z. D. Zhang,et al. Structural and magnetic properties of Mn nanoparticles prepared by arc-discharge[J]. Materials Research Bulletin,2005,40(1):29-37. |
| APA | P. Z. Si.,E. Bruck.,Z. D. Zhang.,O. Tegus.,W. S. Zhang.,...&J. C. P. Klaasse.(2005).Structural and magnetic properties of Mn nanoparticles prepared by arc-discharge.Materials Research Bulletin,40(1),29-37. |
| MLA | P. Z. Si,et al."Structural and magnetic properties of Mn nanoparticles prepared by arc-discharge".Materials Research Bulletin 40.1(2005):29-37. |
入库方式： OAI收割
来源：金属研究所
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