Effects of spacer layers on magnetic properties and exchange couplings of Nd-Fe-B/Nd-Ce-Fe-B multilayer films
文献类型：期刊论文
| 作者 | Sun, Ya-Chao; Zhu, Ming-Gang; Liu, Wei; Han, Rui; Zhang, Wen-Chen; Li, Yan-Feng; Li, Wei; Zhu, MG (reprint author), Cent Iron & Steel Res Inst, Div Funct Mat, Beijing 100081, Peoples R China. |
| 刊名 | IOP PUBLISHING LTD
 |
| 出版日期 | 2017-10-01 |
| 卷号 | 26期号:10页码:- |
| 关键词 | Permanent Magnets Multilayer Films Spacer Layer Irreversible |
| ISSN号 | 1674-1056 |
| 英文摘要 | The influences of the spacer-layer Ta on the structures and magnetic properties of NdFeB/NdCeFeB multilayer films are investigated via DC sputtering under an Ar pressure of 1.2 Pa. An obvious ( 00l) texture of the hard phase is observed in each of the films, which indicates that the main phase of the film does not significantly change with Ta spacer-layer thickness. As a result, both the remanence and the saturation magnetization of the magnet first increase and then decrease, and the maximum values of 4 pi M-r and H-cj are 10.4 kGs ( 1 Gs = 10(-4) T) and 15.0 kOe ( 1 Oe = 79.5775 A.m(-1)) for the film with a 2-nm-thick Ta spacer-layer, respectively, where the crystalline structures are columnar shape particles. The measured relationship between irreversible portion D(H) = Delta M-irr/2M(r) and H indicates that the nucleation field of the film decreases with spacer-layer thickness increasing, owing to slightly disordered grains near the interface between different magnetic layers.; The influences of the spacer-layer Ta on the structures and magnetic properties of NdFeB/NdCeFeB multilayer films are investigated via DC sputtering under an Ar pressure of 1.2 Pa. An obvious ( 00l) texture of the hard phase is observed in each of the films, which indicates that the main phase of the film does not significantly change with Ta spacer-layer thickness. As a result, both the remanence and the saturation magnetization of the magnet first increase and then decrease, and the maximum values of 4 pi M-r and H-cj are 10.4 kGs ( 1 Gs = 10(-4) T) and 15.0 kOe ( 1 Oe = 79.5775 A.m(-1)) for the film with a 2-nm-thick Ta spacer-layer, respectively, where the crystalline structures are columnar shape particles. The measured relationship between irreversible portion D(H) = Delta M-irr/2M(r) and H indicates that the nucleation field of the film decreases with spacer-layer thickness increasing, owing to slightly disordered grains near the interface between different magnetic layers. |
| 学科主题 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 资助机构 | Major State Basic Research Development Program of China [2014CB643701]; National Natural Science Foundation of China [51571064] |
| 公开日期 | 2018-01-10 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79052]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhu, MG (reprint author), Cent Iron & Steel Res Inst, Div Funct Mat, Beijing 100081, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Sun, Ya-Chao,Zhu, Ming-Gang,Liu, Wei,et al. Effects of spacer layers on magnetic properties and exchange couplings of Nd-Fe-B/Nd-Ce-Fe-B multilayer films[J]. IOP PUBLISHING LTD,2017,26(10):-. |
| APA | Sun, Ya-Chao.,Zhu, Ming-Gang.,Liu, Wei.,Han, Rui.,Zhang, Wen-Chen.,...&Zhu, MG .(2017).Effects of spacer layers on magnetic properties and exchange couplings of Nd-Fe-B/Nd-Ce-Fe-B multilayer films.IOP PUBLISHING LTD,26(10),-. |
| MLA | Sun, Ya-Chao,et al."Effects of spacer layers on magnetic properties and exchange couplings of Nd-Fe-B/Nd-Ce-Fe-B multilayer films".IOP PUBLISHING LTD 26.10(2017):-. |
入库方式： OAI收割
来源：金属研究所
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