Carbon encapsulated iron carbide nanoparticles synthesized in ethanol by an electric plasma discharge in an ultrasonic cavitation field
Carbon encapsulated iron carbide nanoparticles synthesized in ethanol by an electric plasma discharge in an ultrasonic cavitation field
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DOI：
10.1016/j.matchemphys.2005.08.064
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发表时间：
2006-07-01
影响因子：
4.6
通讯作者：
Shindo, Daisuke
中科院分区：
文献类型：
--
作者：
Sergiienko, Ruslan;Shibata, Etsuro;Shindo, Daisuke
以乙醇为溶剂，在超声空化场作用下，利用等离子体放电的新方法制备了包裹在多层石墨片中的纳米碳化铁。碳纳米胶囊的尺寸在5和600 nm之间。球形核的晶体结构为正交晶系的Fe 3C和单斜晶系的X-Fe 2.5C。在非晶态中也发现了一些球形颗粒核。室温下的磁滞回线显示合成粉末的饱和磁化强度为51.36 A m（2）kg（-1），矫顽力为3.4 kA m（-1）。(c)2005 Elsevier B. V.保留所有权利。
Nanoparticles of iron carbide wrapped in multilayered graphitic sheets were synthesized by a newly developed method in which an electric plasma was flashed in an ultrasonic cavitation field in liquid ethanol. The size of the carbon nanocapsules ranged between 5 and 600 nm. The crystal structures of the spherical cores were found to be orthorhombic Fe3C and monoclinic X-Fe2.5C. Some spherical particle cores were also discovered in the amorphous state. The magnetic hysteresis loop of the synthesized powder at room temperature showed a saturation magnetization of 51.36 A m(2) kg(-1) and coercivity of 3.4 kA m(-1). (c) 2005 Elsevier B.V. All rights reserved.