Magnetic properties and magnetization reversal of Sm-Co(3x nm)/Co(x nm) multilayered films

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	Magnetic properties and magnetization reversal of Sm-Co(3x nm)/Co(x nm) multilayered films
	C. Y. You; C. Yang; Z. D. Zhang; J. Han; X. K. Sun
	2004
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	19 期号:3 页码:786-794
摘要	[Sm-Co (3x nm)/Co (x nm)](10) (x = 10, 7, 4) multilayered films have been prepared by magnetron rf-sputtering. It is found that the thickness of both hard and soft layers has important effects on phase transformation and magnetic interaction of films. With a fixed ratio of hard- to soft-layer thickness, decreasing simultaneously the thickness of these layers results in increasing coercivity. The effects of the external magnetic field during annealing depend on the Co-layer thickness (x value), mainly because of the formation of different main phases for different thickness of Co layer. For the films with x = 10 and 7, the main phase is Sm2Co17 after annealed. Applying a magnetic field during annealing promotes the crystallization of films, and therefore, it increases the coercivity of the films with x = 10 and 7. Magnetic interaction has been investigated by measuring deltam and remanence magnetization. All the films show that although the exchange coupling favorable for magnetization is significant, the increase of the coercivity mainly originates from improving the pinning effects. Temperature dependence of the coercivity supports that the pinning of domain-walls constitutes a control mechanism of the coercivity. This behavior can be well understood in terms of the Gaunt's approach of the coercivity.
部门归属	chinese acad sci, shenyang natl lab mat sci, met res inst, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. res inst ind sci & technol, electromagnet mat lab, pohang 790330, south korea.;you, cy (reprint author), chinese acad sci, shenyang natl lab mat sci, met res inst, shenyang 110016, peoples r china;cyyou@imr.ac.cn
关键词	Transition-metal Films Thin-films Sm-co Coercivity Phases Alloys Cobalt
URL	查看原文
WOS记录号	WOS:000222316300016
引用统计	被引频次：3[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/321006/35688
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. Y. You,C. Yang,Z. D. Zhang,et al. Magnetic properties and magnetization reversal of Sm-Co(3x nm)/Co(x nm) multilayered films[J]. Journal of Materials Research,2004,19(3):786-794.
APA	C. Y. You,C. Yang,Z. D. Zhang,J. Han,&X. K. Sun.(2004).Magnetic properties and magnetization reversal of Sm-Co(3x nm)/Co(x nm) multilayered films.Journal of Materials Research,19(3),786-794.
MLA	C. Y. You,et al."Magnetic properties and magnetization reversal of Sm-Co(3x nm)/Co(x nm) multilayered films".Journal of Materials Research 19.3(2004):786-794.