Effect of Co and W additions on the structure and magnetic properties of Nd2Fe14B/alpha-Fe nanocomposite magnets

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	Effect of Co and W additions on the structure and magnetic properties of Nd2Fe14B/alpha-Fe nanocomposite magnets
	C. Y. You; X. K. Sun; W. Liu; B. Z. Cui; X. G. Zhao; Z. D. Zhang
	2000
发表期刊	Journal of Physics D-Applied Physics
ISSN	0022-3727
卷号	33 期号:8 页码:926-931
摘要	The effect of Co addition combined with W on the microstructure and magnetic properties of nanocomposite magnets with composition of (1 - x wt%)Nd8.55Fe84.49W0.60 B-0.636 + x wt% CO, prepared by mechanical alloying, has been investigated. The addition of W can increase the unit cell volume of soft and hard phases in nanocomposite: magnets, and cause the anisotropy field of the hard phase component to increase. Therefore, the addition of W can improve coercivity. On the other hand, addition of Co leads to a decrease of the grain size of the alpha-Fe soft phase component in nanocomposite magnets annealed at temperatures lower than 670 degrees C. It leads further to a decrease of the optimal annealing temperatures, an increase of the remanence and maximum magnetic energy product, and a slight decrease of the coercivity. With increasing the content of Co, the dependence of remanence J(r) on annealing temperature T-a changes from a convex shape, giving a maximum, to a monotonically decreasing one. These phenomena have been explained in terms of the variation of grain growth and exchange coupling between the grains, due to the addition of Co and W.
部门归属	acad sinica, inst met res, shenyang 110015, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;you, cy (reprint author), acad sinica, inst met res, shenyang 110015, peoples r china
关键词	Nd-fe-b Remanence Enhancement Alloys Phase Microstructure Nb
URL	查看原文
WOS记录号	WOS:000087004400010
引用统计	被引频次：18[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/321006/37228
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. Y. You,X. K. Sun,W. Liu,et al. Effect of Co and W additions on the structure and magnetic properties of Nd2Fe14B/alpha-Fe nanocomposite magnets[J]. Journal of Physics D-Applied Physics,2000,33(8):926-931.
APA	C. Y. You,X. K. Sun,W. Liu,B. Z. Cui,X. G. Zhao,&Z. D. Zhang.(2000).Effect of Co and W additions on the structure and magnetic properties of Nd2Fe14B/alpha-Fe nanocomposite magnets.Journal of Physics D-Applied Physics,33(8),926-931.
MLA	C. Y. You,et al."Effect of Co and W additions on the structure and magnetic properties of Nd2Fe14B/alpha-Fe nanocomposite magnets".Journal of Physics D-Applied Physics 33.8(2000):926-931.