Tuning the coercivity of Fe-filled carbon-nanotube arrays by changing the shape anisotropy of the encapsulated Fe nanoparticles
文献类型：期刊论文
| 作者 | C. X. Shi ; H. T. Cong |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 2008 |
| 卷号 | 104期号:3 |
| 关键词 | domain iron particles magnetic-properties nanostructures nanowires force |
| ISSN号 | 0021-8979 |
| 中文摘要 | To tune the coercivity of Fe-filled carbon-nanotube (CNT) arrays, the shape anisotropy of encapsulated Fe nanoparticles (Fe-NPs) was investigated. Four Fe-filled CNT-array samples with different Fe-NP aspect ratios were prepared by catalytic pyrolysis of acetylene using ferrocene as catalyst. The coercivity of the Fe-filled CNT arrays increased from similar to 300 to similar to 800 Oe at room temperature when the mean aspect ratio of the encapsulated Fe-NPs changed from 1.6 to 6.0. This clear dependence of the coercivity of the Fe-filled CNT arrays on the aspect ratio of the Fe-NPs might be interpreted in terms of the Stoner-Wohlfarth model. This result indicates that changing the shape anisotropy of the encapsulated Fe-NPs is an effective method to tune the coercivity of the Fe-filled CNTs. (C) 2008 American Institute of Physics. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/33070]  |
| 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 | C. X. Shi,H. T. Cong. Tuning the coercivity of Fe-filled carbon-nanotube arrays by changing the shape anisotropy of the encapsulated Fe nanoparticles[J]. Journal of Applied Physics,2008,104(3). |
| APA | C. X. Shi,&H. T. Cong.(2008).Tuning the coercivity of Fe-filled carbon-nanotube arrays by changing the shape anisotropy of the encapsulated Fe nanoparticles.Journal of Applied Physics,104(3). |
| MLA | C. X. Shi,et al."Tuning the coercivity of Fe-filled carbon-nanotube arrays by changing the shape anisotropy of the encapsulated Fe nanoparticles".Journal of Applied Physics 104.3(2008). |
入库方式： OAI收割
来源：金属研究所
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