Magnetic stability of Al2O3-coated fcc-Co nanocapsules

IMR OpenIR

	Magnetic stability of Al2O3-coated fcc-Co nanocapsules
	X. G. Liu; D. Y. Geng; J. M. Liang; Z. D. Zhang
	2008
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	465 期号:1-2 页码:41135
摘要	Al2O3-coated fcc-Co nanocapsules have been fabricated by arc-discharge. The saturation magnetization at 295 K of the nanocapsules is 41.79 emu/g, which is much higher than that of Co nanoparticles embedded in Al2O3 matrix. The saturation magnetization is almost unchanged after being annealed at 400 K for 2 h in air or being exposed in air for at least 300 days, which indicates that the magnetic properties of the present nanocapsules are very stable. The nanocapsules have a nano-onion structure: the shells from the exterior to the interior are amorphous Al2O3 and At, and the innermost core is fcc-Co. When the nanocapsules are annealed at 400 K for 2 h, the nanocapsules have a core/shell structure with the core of fcc-Co and the shell of amorphous Al2O3. (C) 2007 Elsevier B.V. All rights reserved.
部门归属	[liu, x. g.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;liu, xg (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;liuxg@imr.ac.cn
关键词	Nanocapsules Arc-discharge Exchange Anisotropy Saturation Magnetization Arc-discharge Nanoparticles Particles Fe Nanocomposites Impact Al2o3
URL	查看原文
WOS记录号	WOS:000259980000006
引用统计	被引频次：9[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/321006/32970
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. G. Liu,D. Y. Geng,J. M. Liang,et al. Magnetic stability of Al2O3-coated fcc-Co nanocapsules[J]. Journal of Alloys and Compounds,2008,465(1-2):41135.
APA	X. G. Liu,D. Y. Geng,J. M. Liang,&Z. D. Zhang.(2008).Magnetic stability of Al2O3-coated fcc-Co nanocapsules.Journal of Alloys and Compounds,465(1-2),41135.
MLA	X. G. Liu,et al."Magnetic stability of Al2O3-coated fcc-Co nanocapsules".Journal of Alloys and Compounds 465.1-2(2008):41135.