Preparation and properties of dysprosium nanocapsules coated with boron, carbon, and dysprosium oxide

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	Preparation and properties of dysprosium nanocapsules coated with boron, carbon, and dysprosium oxide
	P. Z. Si; E. Bruck; Z. D. Zhang; I. Skorvanek; J. Kovac; M. Zhang
	2004
发表期刊	Materials Research Bulletin
ISSN	0025-5408
卷号	39 期号:7-8 页码:1005-1012
摘要	Boron-coated dysprosium/dysprosium oxide, carbon-coated dysprosium/DyC(2), and dysprosium oxide-coated dysprosium nanocapsules were prepared using an arc discharge method in diborane, methane, and argon, respectively. The magnetization of these nanocapsules has been measured at temperatures between 4 and 290 K, in applied fields up to 6 T. The transition temperature of nanocrystalline Dy from the helical phase to the ferromagnetic phase is much lower than that of bulk Dy. The linear temperature dependence of the inverse susceptibility of these nanocapsules, being a mixture of superparamagnetic Dy and paramagnetic dysprosium oxide or carbide, can be explained within the molecular field theory with magnetic moments with the total angular momentum J = 15/2 and the Lande factor g = 4/3. We discuss the relations between the structure and the magnetization of these nanocapsules. (C) 2004 Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, inst met res, int ctr mat phys, shenyang natl lab mat sci, shenyang 110016, peoples r china. univ amsterdam, van der waals zeeman inst, nl-1018 xe amsterdam, netherlands. slovak acad sci, inst expt phys, kosice 04353, slovakia.;si, pz (reprint author), chinese acad sci, inst met res, int ctr mat phys, shenyang natl lab mat sci, shenyang 110016, peoples r china;pzsi@mail.com
关键词	Nanostructures Electron Microscopy Magnetic Properties Magnetic-properties Arc-discharge Nanoparticles Particles
URL	查看原文
WOS记录号	WOS:000222005400016
引用统计	被引频次：8[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/321006/35545
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. Z. Si,E. Bruck,Z. D. Zhang,et al. Preparation and properties of dysprosium nanocapsules coated with boron, carbon, and dysprosium oxide[J]. Materials Research Bulletin,2004,39(7-8):1005-1012.
APA	P. Z. Si,E. Bruck,Z. D. Zhang,I. Skorvanek,J. Kovac,&M. Zhang.(2004).Preparation and properties of dysprosium nanocapsules coated with boron, carbon, and dysprosium oxide.Materials Research Bulletin,39(7-8),1005-1012.
MLA	P. Z. Si,et al."Preparation and properties of dysprosium nanocapsules coated with boron, carbon, and dysprosium oxide".Materials Research Bulletin 39.7-8(2004):1005-1012.