Magnetic properties and large cryogenic low-field magnetocaloric effect of HoCo2 nanoparticles without core/shell structure
文献类型：期刊论文
| 作者 | Liu, X. G.1,2; Geng, D. Y.1,2; Jiang, J. J.1,2; Li, B.1,2; Ma, S.1,2; Li, D.1,2; Liu, W.1,2; Zhang, Z. D.1,2 |
| 刊名 | JOURNAL OF NANOPARTICLE RESEARCH
 |
| 出版日期 | 2010-05-01 |
| 卷号 | 12期号:4页码:1167-1172 |
| 关键词 | Nanoparticles Magnetic properties Magnetocaloric effect Environment-friendly refrigeration |
| ISSN号 | 1388-0764 |
| DOI | 10.1007/s11051-009-9717-8 |
| 通讯作者 | Liu, X. G.(liuxg@imr.ac.cn) |
| 英文摘要 | The HoCo2 nanoparticles are found to be stable in air without any shell protection. The HoCo2 nanoparticles display superparamagnetic properties between their blocking temperature of 40 K and Curie temperature of 78 K. The magnetic-entropy change increases with decreasing temperature at a certain magnetic-field change, which is ascribed to the competition between the Zeeman energy and thermal-agitation energy at low temperatures. A large magnetic-entropy change of 19.4 J kg(-1) K-1 was found at 7.5 K in an applied-field change from 1 to 7 T, while 6.1 J kg(-1) K-1 was achieved in a low field change of 1 T. HoCo2 nanoparticles are useful for application of magnetic refrigeration at low temperatures. |
| 资助项目 | National Natural Science Foundation of China[5033 1030] ; National Natural Science Foundation of China[50831006] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000276883600010 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/100674]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, X. G. |
| 作者单位 | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, X. G.,Geng, D. Y.,Jiang, J. J.,et al. Magnetic properties and large cryogenic low-field magnetocaloric effect of HoCo2 nanoparticles without core/shell structure[J]. JOURNAL OF NANOPARTICLE RESEARCH,2010,12(4):1167-1172. |
| APA | Liu, X. G..,Geng, D. Y..,Jiang, J. J..,Li, B..,Ma, S..,...&Zhang, Z. D..(2010).Magnetic properties and large cryogenic low-field magnetocaloric effect of HoCo2 nanoparticles without core/shell structure.JOURNAL OF NANOPARTICLE RESEARCH,12(4),1167-1172. |
| MLA | Liu, X. G.,et al."Magnetic properties and large cryogenic low-field magnetocaloric effect of HoCo2 nanoparticles without core/shell structure".JOURNAL OF NANOPARTICLE RESEARCH 12.4(2010):1167-1172. |
入库方式： OAI收割
来源：金属研究所
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