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	Study on the magnetic properties and domain structure of NdFeNBZrB nanocomposite permanent magnets
	Qin, W.Y. ; Chen, X.Y. ; Jiang, Zh.L. ; Ling, Zh.D. ; Chen, H.M.
	2010-05-10 ; 2010-05-10
关键词	Experimental/ boron alloys coercive force exchange interactions (electron) ferromagnetic materials grain refinement grain size iron alloys magnetic domains magnetic force microscopy melt spinning nanocomposites nanotechnology neodymium alloys niobium alloys permanent magnets zirconium alloys/ magnetic properties domain structure NdFeNBZrB nanocomposite permanent magnets Nd/sub 2/Fe/sub 14/B/ alpha -Fe nanocomposite rare-earth magnets microstructure coercivity grain refinement grain size melt spinning amorphous structure MFM magnetic contrast exchange coupling effect NdFeNbZrB/ A7560C Magnetic domain walls and domain structure A7560E Magnetization curves, hysteresis, Barkhausen and related effects A7550B Ferromagnetism of Fe and its alloys A7550V High coercivity magnetic materials A7530E Exchange and superexchange interactions in magnetically ordered materials A8116 Methods of nanofabrication and processing A6480G Microstructure B3120E Permanent magnets B3110C Ferromagnetic materials B0550 Composite materials (engineering materials science)/ NdFeNbZrB/int Fe/int Nb/int Nd/int Zr/int B/int NdFeNbZrB/ss Fe/ss Nb/ss Nd/ss Zr/ss B/ss
中文摘要	A new kind of nanocomposite rare-earth magnets of Nd/sub 2/Fe /sub 14/B/ alpha -Fe were prepared by melt-spinning method. Effects of alloying element and processing parameter on the microstructure and magnetic properties of nanocomposite materials have been investigated. Zr is effective to enhance coercivity of alloys because of a refinement of grains, so that in alloy of Zr content with 1.0 at% (Zr/sub 10/) has the smallest grain size of 17 nm and therefore causes the highest intrinsic coercivity . Addition of Zr can also enhance the ability of amorphous-forming. The combination of adding of Zr and using a smaller diameter of the nozzle in the melt-spinning method is effective for the forming of amorphous structure. According to the MFM study, the length of the magnetic contrast in the alloy is much larger than the mean grain size. The large length corresponds to that of interaction domains (ID), which is related to the exchange coupling effect.
语种	英语 ; 英语
出版者	Trans Tech Publications ; Switzerland
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/20303]
专题	清华大学
推荐引用方式 GB/T 7714	Qin, W.Y.,Chen, X.Y.,Jiang, Zh.L.,et al. Study on the magnetic properties and domain structure of NdFeNBZrB nanocomposite permanent magnets[J],2010, 2010.
APA	Qin, W.Y.,Chen, X.Y.,Jiang, Zh.L.,Ling, Zh.D.,&Chen, H.M..(2010).Study on the magnetic properties and domain structure of NdFeNBZrB nanocomposite permanent magnets..
MLA	Qin, W.Y.,et al."Study on the magnetic properties and domain structure of NdFeNBZrB nanocomposite permanent magnets".(2010).

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