Synthesis and characterization of FeCoNiAl nanocapsules by plasma arc discharge process
文献类型：期刊论文
| 作者 | D. Y. Geng ; W. Y. Park ; J. C. Kim ; J. H. Yu ; C. J. Choi ; Z. D. Zhang |
| 刊名 | Journal of Materials Research
 |
| 出版日期 | 2005 |
| 卷号 | 20期号:9页码:2534-2543 |
| 关键词 | coated fe-co(c) nanocapsules magnetic-properties metal reaction fe particles nanoparticles methane iron |
| ISSN号 | 0884-2914 |
| 中文摘要 | A series of magnetic FeCoNiAl nanocapsules was synthesized by the plasma arc discharge method; the targets of Fe, Co, Ni, and Al powders were changed with varying compositions. The compositions of the nanocapsules were found to be quite different from those of the corresponding targets; the relative amount of Al (or Ni, Co) to Fe was increased (or decreased). Structures, particles sizes, composition, surface composition, magnetic properties, and thermal stability of the nanocapsules were investigated. The saturation magnetization M-s = 106.8 emu/g and coercive force H-i(c) = 367 Oe were achieved for the nanocapsules with the Fe62.5Co21Ni13Al2.5 target. In the FeCoNiAl nanocapsules, the binding energies of Fe, Co, and Ni were different from those of the metals Fe, Co, and Ni. The binding energies of Fe2p3/2 and Fe2pl/2 of the nanocapsules were 708.2 and 721.3 eV, respectively. The four-layer structure was proposed to give a clear statement of how the composition and phase varied radially in the nanocapsules. The major contents of the four layers-i.e., the outer shell, the inner shell, the outer core and the inner core-were amorphous alumina, crystalline alumina, transition metal oxides, and transition metal alloy, respectively. The compositions, structures, particle size, and grain size of the nanocapsules all affect their magnetic properties. In the FeCoNiAl nanocapsules, the greater th amount of the body-centered-cubic phase, the stronger the ferromagnetic magnetic properties. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34851]  |
| 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 | D. Y. Geng,W. Y. Park,J. C. Kim,et al. Synthesis and characterization of FeCoNiAl nanocapsules by plasma arc discharge process[J]. Journal of Materials Research,2005,20(9):2534-2543. |
| APA | D. Y. Geng,W. Y. Park,J. C. Kim,J. H. Yu,C. J. Choi,&Z. D. Zhang.(2005).Synthesis and characterization of FeCoNiAl nanocapsules by plasma arc discharge process.Journal of Materials Research,20(9),2534-2543. |
| MLA | D. Y. Geng,et al."Synthesis and characterization of FeCoNiAl nanocapsules by plasma arc discharge process".Journal of Materials Research 20.9(2005):2534-2543. |
入库方式： OAI收割
来源：金属研究所
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