Structure and magnetic properties of Sm-Co(x nm)/Co (6 nm) multi-layered nanocomposite films

IMR OpenIR

	Structure and magnetic properties of Sm-Co(x nm)/Co (6 nm) multi-layered nanocomposite films
	C. J. Yang; J. S. Han; C. Y. You; Z. D. Zhang
	2003
发表期刊	Journal of the Korean Physical Society
ISSN	0374-4884
卷号	42 期号:3 页码:401-407
摘要	A detailed analysis of the structures and magnetic properties has been made for ten-layered films of [Sm-Co(x nm)/Co(6 nm)]. By studying the dependences of the coercivity on annealing temperature (T-alpha) and time (t(alpha)) for the various films, we deduced an optimal heat-treatment with a T-alpha about 570 degreesC and t(alpha) of about 20 min. Applying a magnetic field during annealing was harmful to the coercivity due to a reduction in the number of domain wall pinning sites and to grain coarsening. With decreasing thickness of the Sm-Co layer, the dependence of the coercivity on the applied field became less pronounced. The Henkel plot, deltam, of the-multilayered films showed the comparative magnitudes of exchange interaction for quite different coercivity values, and suggested that the increase in the coercivity might be due to improving the, pinning effectiveness, not to enhancement of the exchange coupling. Magnetic viscosity measurements indicated that a lower switching field corresponded to a larger coercivity due to more effective pinning of the domain walls.
部门归属	res inst ind sci & technol, nanotechnol project team, pohang 790330, south korea. 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.;yang, cj (reprint author), res inst ind sci & technol, nanotechnol project team, pohang 790330, south korea
关键词	Nanocomposite Films Multilayer Exchange Coupling Transition-metal Films Thin-films Permanent-magnets Sm-co Coercivity Phases Noise Media
URL	查看原文
WOS记录号	WOS:000181598500020
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/321006/36102
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. J. Yang,J. S. Han,C. Y. You,et al. Structure and magnetic properties of Sm-Co(x nm)/Co (6 nm) multi-layered nanocomposite films[J]. Journal of the Korean Physical Society,2003,42(3):401-407.
APA	C. J. Yang,J. S. Han,C. Y. You,&Z. D. Zhang.(2003).Structure and magnetic properties of Sm-Co(x nm)/Co (6 nm) multi-layered nanocomposite films.Journal of the Korean Physical Society,42(3),401-407.
MLA	C. J. Yang,et al."Structure and magnetic properties of Sm-Co(x nm)/Co (6 nm) multi-layered nanocomposite films".Journal of the Korean Physical Society 42.3(2003):401-407.