Synthesis of a new type of GdAl2 nanocapsule with a large cryogenic magnetocaloric effect and novel coral-like aggregates self-assembled by nanocapsules
文献类型：期刊论文
| 作者 | S. Ma ; D. Y. Geng ; W. S. Zhang ; W. Liu ; X. L. Ma ; Z. D. Zhang |
| 刊名 | Nanotechnology
 |
| 出版日期 | 2006 |
| 卷号 | 17期号:21页码:5406-5411 |
| 关键词 | arc-discharge magnetic-properties coated iron nanoparticles co oxide nanocrystallites nanocomposites encapsulation nanotrees |
| ISSN号 | 0957-4484 |
| 中文摘要 | A new type of GdAl2 nanocapsule with single-phase intermetallic compound GdAl2 as the core and amorphous Al2O3 as the shell has been synthesized by the arc-discharge technique with modified strategies. Meanwhile, novel three-dimensional coral-like hierarchical branching macro-aggregates were self-assembled by disordered nanocapsules synthesized simultaneously in the arc-discharge process. The GdAl2 nanocapsules display superparamagnetic properties between their blocking temperature of 100 K and Curie temperature of 162 K. The magnetocaloric effect of the GdAl2 nanocapsules was measured between 5 and 165 K. The absolute value of the change of magnetic entropy of the GdAl2 nanocapsules sharply increases with decreasing temperature and reaches 14.5 J kg(-1) K-1 at 5 K in magnetic fields varying from 0 to 50 kOe. As a result, this new type of nanocapsule can prospectively be applied in cryogenic magnetic refrigerator devices. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34397]  |
| 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 | S. Ma,D. Y. Geng,W. S. Zhang,et al. Synthesis of a new type of GdAl2 nanocapsule with a large cryogenic magnetocaloric effect and novel coral-like aggregates self-assembled by nanocapsules[J]. Nanotechnology,2006,17(21):5406-5411. |
| APA | S. Ma,D. Y. Geng,W. S. Zhang,W. Liu,X. L. Ma,&Z. D. Zhang.(2006).Synthesis of a new type of GdAl2 nanocapsule with a large cryogenic magnetocaloric effect and novel coral-like aggregates self-assembled by nanocapsules.Nanotechnology,17(21),5406-5411. |
| MLA | S. Ma,et al."Synthesis of a new type of GdAl2 nanocapsule with a large cryogenic magnetocaloric effect and novel coral-like aggregates self-assembled by nanocapsules".Nanotechnology 17.21(2006):5406-5411. |
入库方式： OAI收割
来源：金属研究所
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