Synthesis, structure and magnetic properties of SiO2-coated Fe nanocapsules

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	Synthesis, structure and magnetic properties of SiO2-coated Fe nanocapsules
	X. F. Zhang; X. L. Dong; H. Huang; B. Lv; X. G. Zhu; J. P. Lei; S. Ma; W. Liu; Z. D. Zhang
	2007
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	454 页码:211-215
摘要	SiO2-coated Fe nanocapsules were synthesized by arc-discharge method using micron-sized powders as the raw materials. It was shown that most of nanocapsules were spherical with a "core/shell" type structure. The shell was an amorphous SiO2 with around 10-20 nm in thickness and the core was a ferromagnetic Fe. The unique morphologies of the nanocapsules implied that the growth was governed by an extended mechanism of the vapor-liquid-solid (VLS) with the existence of stoichiometric oxygen. The Fe core was in a BCC structure and may play as a catalyst. This kind of "core/shell" type nano-composite can involve multi-loss mechanisms for electromagnetic wave absorption and open a way to synthesizing serials of new "core/shell" (metallic/dielectric) type nano-composites. (C) 2006 Elsevier B.V. All rights reserved.
部门归属	dalian univ technol, sch mat sci & engn, dalian 116024, liaoning, peoples r china. dalian univ technol, state key lab mat modificat laser ion & electron, dalian 116024, liaoning, peoples r china. met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;dong, xl (reprint author), dalian univ technol, sch mat sci & engn, dalian 116024, liaoning, peoples r china;dongxl@dlut.edu.cn
关键词	Physical Vapor Deposition Nanocapsules Vls Mechanism Magnetic Properties Sol-gel Method Arc-discharge Fe/sio2 Nanocomposites Fe-co(c) Nanocapsules Oxide Nanoparticles Silica Particles Nanowires Colloids Methane
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WOS记录号	WOS:000245898500029
引用统计	被引频次：45[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/321006/34050
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. F. Zhang,X. L. Dong,H. Huang,et al. Synthesis, structure and magnetic properties of SiO2-coated Fe nanocapsules[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2007,454:211-215.
APA	X. F. Zhang.,X. L. Dong.,H. Huang.,B. Lv.,X. G. Zhu.,...&Z. D. Zhang.(2007).Synthesis, structure and magnetic properties of SiO2-coated Fe nanocapsules.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,454,211-215.
MLA	X. F. Zhang,et al."Synthesis, structure and magnetic properties of SiO2-coated Fe nanocapsules".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 454(2007):211-215.