Relation between structure and magnetic properties of Nd-2(Fe, Co, Mo)(14)B/alpha-Fe nanocomposite magnets

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	Relation between structure and magnetic properties of Nd-2(Fe, Co, Mo)(14)B/alpha-Fe nanocomposite magnets
	B. Z. Cui; X. K. Sun; L. Y. Xiong; S. T. Cao; X. X. Zhang; W. Liu; D. Y. Geng; Z. D. Zhang
	2002
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	340 期号:1-2 页码:242-251
摘要	The relationship between nanostructure, exchange coupling and magnetic properties of Nd-2(Fe, Co, Mo) B/alpha-Fe nanocomposite magnets prepared by mechanical alloying (MA) has been studied systematically. Different categories of grain interfaces have been directly observed, which correspond to different types of exchange couplings in the Nd2Fe14B/alpha-Fe-type nanocomposite magnets. The notable decrease of the spin-reorientation temperature T-sr of Nd2Fe14B phase convincingly demonstrates the presence of strong inter-grain exchange coupling in the Nd2Fe14B/alpha-Fe-type nanocomposites. For as-annealed Nd8.4Fe87.1-xMoxB4.5 (x=0, 0.6, 1.1 and 1.6) and Nd8.4Fe80.4Co5.6Mo1.1B4.5 alloys, the intrinsic coercivity mu(0)H(c) and the maximum magnetic energy product (BH)(max) are remarkably improved in the alloys with only Mo-additions as well as in the Nd8.4Fe80.4Co5.6Mo1.1B4.5 alloy. The improvement of the magnetic properties is the result of an enhancement of the exchange coupling, because of the modifications of nanostructural factors and phase components by a proper substitution of 3d elements for Fe. (C) 2002 Elsevier Science B V All rights reserved.
部门归属	acad sinica, inst met res, shenyang natl lab mat sci, shenyang 110015, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china. hong kong univ sci & technol, dept phys, hong kong, hong kong, peoples r china.;zhang, zd (reprint author), acad sinica, inst met res, shenyang natl lab mat sci, shenyang 110015, peoples r china
关键词	Permanent Magnets Nanostructured Materials Mechanical Alloying Tem Mossbauer Spectroscopy Positron-annihilation Spin-reorientation Enhanced Remanence Permanent-magnets Fe Nd2fe14b Substitution Anisotropy Lifetime Alloys
URL	查看原文
WOS记录号	WOS:000176206700040
引用统计	被引频次：19[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/321006/36248
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Z. Cui,X. K. Sun,L. Y. Xiong,et al. Relation between structure and magnetic properties of Nd-2(Fe, Co, Mo)(14)B/alpha-Fe nanocomposite magnets[J]. Journal of Alloys and Compounds,2002,340(1-2):242-251.
APA	B. Z. Cui.,X. K. Sun.,L. Y. Xiong.,S. T. Cao.,X. X. Zhang.,...&Z. D. Zhang.(2002).Relation between structure and magnetic properties of Nd-2(Fe, Co, Mo)(14)B/alpha-Fe nanocomposite magnets.Journal of Alloys and Compounds,340(1-2),242-251.
MLA	B. Z. Cui,et al."Relation between structure and magnetic properties of Nd-2(Fe, Co, Mo)(14)B/alpha-Fe nanocomposite magnets".Journal of Alloys and Compounds 340.1-2(2002):242-251.