Structure and magnetic properties of Cr(N)-beta-Cr2N nanoparticles prepared by arc-discharge
文献类型：期刊论文
| 作者 | W. J. Feng ; D. Li ; W. F. Li ; S. Ma ; Y. B. Li ; D. K. Xiong ; W. S. Zhang ; Z. D. Zhang |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2006 |
| 卷号 | 425期号:1-2页码:41008 |
| 关键词 | arc-discharge nanoparticles blocking temperature Curie-Weiss law fe-co(c) nanocapsules chromium temperature fabrication particles oxidation diborane nitrides coatings metals |
| ISSN号 | 0925-8388 |
| 中文摘要 | Cr(N)-beta-Cr2N nanoparticles were prepared by arc-discharge process in a mixture of argon, hydrogen and nitrogen gases. The nanoparticles are composed of the two components, i,e. Cr(N) solid-solution nanoparticles (polyhedral shape) and beta-Cr2N nitrogen-deficiency nanoparticles (cuboidal shape). Both the nanoparticles share a similar shell-core structure: the shell consists of chromium oxide Cr-2(CrO4)(3) or Cr-O (20 at% Cr), and the complex of Cr and N-O, as well as the core of Cr(N) solid-solution or beta-Cr2N. Moreover, the nanoparticles have a blocking temperature of 29 K and a narrow size distribution. The weak ferromagnetism can be interpreted in terms of the presence of non-compensated surface spins. For the field-cooled (FC) magnetization with the field of 0.01 T, a perfect Curie-Weiss fit of the data above 50 K indicates paramagnetic characteristics of the nanoparticles. This is supported by the hysteresis loops at 5 and 295 K. The paramagnetic Curie temperature of -124 K suggests the type of dominant interaction is antiferromagnetic. (c) 2006 Published by Elsevier B.V. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34196]  |
| 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. J. Feng,D. Li,W. F. Li,et al. Structure and magnetic properties of Cr(N)-beta-Cr2N nanoparticles prepared by arc-discharge[J]. Journal of Alloys and Compounds,2006,425(1-2):41008. |
| APA | W. J. Feng.,D. Li.,W. F. Li.,S. Ma.,Y. B. Li.,...&Z. D. Zhang.(2006).Structure and magnetic properties of Cr(N)-beta-Cr2N nanoparticles prepared by arc-discharge.Journal of Alloys and Compounds,425(1-2),41008. |
| MLA | W. J. Feng,et al."Structure and magnetic properties of Cr(N)-beta-Cr2N nanoparticles prepared by arc-discharge".Journal of Alloys and Compounds 425.1-2(2006):41008. |
入库方式： OAI收割
来源：金属研究所
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