Synthesis, characterization, and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules

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	Synthesis, characterization, and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules; Synthesis, characterization, and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules
	Z. D. Zhang; J. G. Zheng; I. Skorvanek; J. Kovac; J. L. Yu; X. L. Dong; Z. J. Li; S. R. Jin; X. G. Zhao; W. Liu
	2001 ; 2001
发表期刊	Journal of Nanoscience and Nanotechnology ; Journal of Nanoscience and Nanotechnology
ISSN	1533-4880 ; 1533-4880
卷号	1 期号:2 页码:153-158
摘要	Carbon- and boron-oxide-encapsulated iron nanocapsules have been synthesized by arc discharge in methane (CH4) and diborane (B2H6) atmospheres respectively. The characterization and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules [abbreviated as Fe(C) and Fe(B) respectively] were investigated and compared. The structure of the Fe(B) nanocapsules is different from that of the Fe(C) nanocapsules. The Fe(C) nanocapsules consist of a crystalline graphite shell and a core of alpha-Fe and/or Fe3C. The Fe(B) nanocapsules consist of an amorphous oron-oxide layer and a core of Fe(B) solid solution, alpha-Fe, gamma-Fe, FeB, and/or FG(3)B phases. The saturation magnetizations of both the Fe(C) and the Fe(B) nanocapsules below 300 K decrease monotonically with increasing temperature. The coercivities of the Fe(C) and Fe(B) nanocapsules are almost 2 orders of magnitude higher than that of bulk Fe. The temperature dependence of magnetization at high temperatures indicates the existence of some phase transformations.; Carbon- and boron-oxide-encapsulated iron nanocapsules have been synthesized by arc discharge in methane (CH4) and diborane (B2H6) atmospheres respectively. The characterization and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules [abbreviated as Fe(C) and Fe(B) respectively] were investigated and compared. The structure of the Fe(B) nanocapsules is different from that of the Fe(C) nanocapsules. The Fe(C) nanocapsules consist of a crystalline graphite shell and a core of alpha-Fe and/or Fe3C. The Fe(B) nanocapsules consist of an amorphous oron-oxide layer and a core of Fe(B) solid solution, alpha-Fe, gamma-Fe, FeB, and/or FG(3)B phases. The saturation magnetizations of both the Fe(C) and the Fe(B) nanocapsules below 300 K decrease monotonically with increasing temperature. The coercivities of the Fe(C) and Fe(B) nanocapsules are almost 2 orders of magnitude higher than that of bulk Fe. The temperature dependence of magnetization at high temperatures indicates the existence of some phase transformations.
部门归属	acad sinica, inst met res, int ctr mat phys, shenyang 110016, peoples r china. univ liverpool, dept engn, liverpool l69 3gh, merseyside, england. slovak acad sci, inst expt phys, bratislava, slovakia. shenyang polytech univ, lab ultrafine particles, shenyang 110023, peoples r china.;zhang, zd (reprint author), acad sinica, inst met res, int ctr mat phys, shenyang 110016, peoples r china ; acad sinica, inst met res, int ctr mat phys, shenyang 110016, peoples r china. univ liverpool, dept engn, liverpool l69 3gh, merseyside, england. slovak acad sci, inst expt phys, bratislava, slovakia. shenyang polytech univ, lab ultrafine particles, shenyang 110023, peoples r china.;zhang, zd (reprint author), acad sinica, inst met res, int ctr mat phys, shenyang 110016, peoples r china
关键词	Iron Nanocapsules Iron Nanocapsules Nanoparticles Nanoparticles Core/shell Structure Core/shell Structure Characterization Characterization Magnetic Properties Magnetic Properties Carbon- Carbon- Boron-oxide-encapsulated Boron-oxide-encapsulated Nanocapsules Nanocapsules Fe-co(c) Nanocapsules Fe-co(c) Nanocapsules Particles Particles Fe Fe Nanotubes Nanotubes
URL	查看原文 ; 查看原文
WOS记录号	WOS:000174291400007 ; WOS:000174291400007
引用统计	被引频次：15[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/321006/36923
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. D. Zhang,J. G. Zheng,I. Skorvanek,et al. Synthesis, characterization, and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules, Synthesis, characterization, and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules[J]. Journal of Nanoscience and Nanotechnology, Journal of Nanoscience and Nanotechnology,2001, 2001,1, 1(2):153-158, 153-158.
APA	Z. D. Zhang.,J. G. Zheng.,I. Skorvanek.,J. Kovac.,J. L. Yu.,...&W. Liu.(2001).Synthesis, characterization, and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules.Journal of Nanoscience and Nanotechnology,1(2),153-158.
MLA	Z. D. Zhang,et al."Synthesis, characterization, and magnetic properties of carbon- and boron-oxide-encapsulated iron nanocapsules".Journal of Nanoscience and Nanotechnology 1.2(2001):153-158.