Effects of spacer layers on magnetic properties and exchange couplings of Nd-Fe-B/Nd-Ce-Fe-B multilayer films

IMR OpenIR

	Effects of spacer layers on magnetic properties and exchange couplings of Nd-Fe-B/Nd-Ce-Fe-B multilayer films
	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.
	2017-10-01
发表期刊	IOP PUBLISHING LTD
ISSN	1674-1056
卷号	26 期号:10 页码:-
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.
部门归属	[sun, ya-chao ; zhu, ming-gang ; han, rui ; zhang, wen-chen ; li, yan-feng ; li, wei] cent iron & steel res inst, div funct mat, beijing 100081, peoples r china ; [liu, wei] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china
关键词	Permanent Magnets Multilayer Films Spacer Layer Irreversible
学科领域	Physics, Multidisciplinary
资助者	Major State Basic Research Development Program of China [2014CB643701]; National Natural Science Foundation of China [51571064]
收录类别	SCI
语种	英语
WOS记录号	WOS:000412426200001
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79052
专题	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):-.