Magnetic properties and magnetic domains of Nd-Fe-B thin films

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	Magnetic properties and magnetic domains of Nd-Fe-B thin films
	S. L. Chen ; W. Liu ; D. Zhang ; G. H. Gunaratne
刊名	Journal of Applied Physics
	2008
卷号	103 期号:2
关键词	oriented nd2fe14b films multilayer magnets buffer layer microstructure deposition patterns ndfeb mo cr ti
ISSN号	0021-8979
中文摘要	Anisotropic Nd-Fe-B thin films are fabricated by direct current magnetron sputtering on Si substrates heated to temperatures over a wide range. Surface morphology and magnetic domains of the Nd-Fe-B thin films prepared at different sputtering temperatures (25-600 degrees C) are observed by a scanning probe microscopy. The magnetic domains exhibit a rich variety of textures, changing from striped via maze to cloudlike as the sputtering temperature is increased. Variations in magnetic domains with substrate temperature are discussed using phase components and magnetic anisotropies of the thin films. In addition, patterns of magnetic domains are analyzed using the "disorder functions," a set of characterizations of complex patterns with labyrinthine structures. The disorder function delta(1) and the structure factor delta k do not change appreciably until a substrate temperature of 350 degrees C, but increases significantly beyond 400 degrees C. The disorder in magnetic domains increases with increasing sputtering temperature. A simultaneous enhancement of the anisotropic c texture and the hard-magnetic properties of the thin films are observed. The significant change of the disorder function at T(s)=400 degrees C appears to be a precursor to the hardening of the Nd-Fe-B film. The most disordered magnetic domains of the film with the substrate temperature of 600 degrees C correspond to the optimum magnetic properties, with the maximum energy product (BH)(max) of 22.4 MG Oe. (C) 2008 American Institute of Physics.
原文出处	://WOS:000252821100070
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32677]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	S. L. Chen,W. Liu,D. Zhang,et al. Magnetic properties and magnetic domains of Nd-Fe-B thin films[J]. Journal of Applied Physics,2008,103(2).
APA	S. L. Chen,W. Liu,D. Zhang,&G. H. Gunaratne.(2008).Magnetic properties and magnetic domains of Nd-Fe-B thin films.Journal of Applied Physics,103(2).
MLA	S. L. Chen,et al."Magnetic properties and magnetic domains of Nd-Fe-B thin films".Journal of Applied Physics 103.2(2008).