Electrical and magnetic properties of epsilon-Fe3N nanoparticles synthesized by chemical vapor condensation process

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	Electrical and magnetic properties of epsilon-Fe3N nanoparticles synthesized by chemical vapor condensation process
	D. Li; Z. D. Zhang; W. F. Li; W. J. Feng; C. J. Choi; B. K. Kim
	2006
发表期刊	Journal of Magnetism and Magnetic Materials
ISSN	0304-8853
卷号	307 期号:1 页码:128-133
摘要	epsilon-Fe3N nanoparticles synthesized by chemical vapor condensation (CVC) are covered with shells of disordered Fe3O4 phase, as observed by a transmission electron microscopy. The zero-field cooling and field cooling temperature dependence of magnetization, ac susceptibility as a function of frequency, magnetic hysteresis loops, and the temperature dependence of resistivity of the epsilon-Fe3N nanoparticles are systematically studied. The results indicate the existence of complex magnetic properties, such as superparamagnetic behavior, exchange bias, magnetic dipole interaction, and the possible coexistence of ferromagnetic and spin-glass-like states and/or disordered surface spins of the shells at low temperatures. The temperature dependence of resistivity p(T) for compacted epsilon-Fe3N nanoparticles in a temperature range of 110 K < T < 300 K can be well described by the mechanism of fluctuation-induced tunneling conduction, while that below 110 K can be ascribed to conducting electrons scattered by localized magnetic moments and impurity as well as the influence of freezing of spin-glass-like moments and/or disordered surface spins of the shells. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phyx, inst met res, shenyang 110016, peoples r china. korea inst machinery & mat, chang won 641010, kyungnam, south korea.;li, d (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;dali@imr.ac.cn
关键词	Fe3n Nanoparticles Chemical Vapor Condensation Magnetic Properties Electrical Properties Ultrafine Iron Particles Ferromagnetic Particles Verwey Transition Fe Nanoparticles Spin Disorder Fe3o4 Oxidation Systems
URL	查看原文
WOS记录号	WOS:000241144900017
引用统计	被引频次：18[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/321006/34295
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. Li,Z. D. Zhang,W. F. Li,et al. Electrical and magnetic properties of epsilon-Fe3N nanoparticles synthesized by chemical vapor condensation process[J]. Journal of Magnetism and Magnetic Materials,2006,307(1):128-133.
APA	D. Li,Z. D. Zhang,W. F. Li,W. J. Feng,C. J. Choi,&B. K. Kim.(2006).Electrical and magnetic properties of epsilon-Fe3N nanoparticles synthesized by chemical vapor condensation process.Journal of Magnetism and Magnetic Materials,307(1),128-133.
MLA	D. Li,et al."Electrical and magnetic properties of epsilon-Fe3N nanoparticles synthesized by chemical vapor condensation process".Journal of Magnetism and Magnetic Materials 307.1(2006):128-133.