The synthesis of carbon coated Fe, Co and Ni nanoparticles and an examination of their magnetic properties
The synthesis of carbon coated Fe, Co and Ni nanoparticles and an examination of their magnetic properties
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DOI：
10.1016/j.carbon.2009.06.025
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发表时间：
2009-10-01
期刊：
影响因子：
10.9
通讯作者：
Klingeler, R.
中科院分区：
文献类型：
--
作者：
El-Gendy, A. A.;Ibrahim, E. M. M.;Klingeler, R.
采用高压化学气相沉积法制备了碳包覆的Fe、Co和Ni纳米颗粒（分别为Fe@C、Co@C和Ni@C）。扫描电子显微镜图像证明形成了具有Fe、Co和Ni核的碳包覆颗粒。高分辨率透射电子显微镜图像显示纳米颗粒具有2至100纳米的尺寸分布，并显示核/壳结构，其中一个或多个颗粒在特定壳中形成核。根据X射线衍射峰，确认了核心材料的相，并根据峰宽确定平均粒度，Fe@C、Co@C和Ni@C的平均粒度分别为16、21和19 nm。涂覆的纳米颗粒在至少高达400 K时具有铁磁性。交流磁加热的研究已经进行，这意味着其潜在的应用在热疗。(C)2009爱思唯尔有限公司保留所有权利。
Carbon coated Fe, Co and Ni nanoparticles (Fe@C, Co@C, and Ni@C, respectively) have been produced by high pressure chemical vapour deposition. Scanning electron microscopy images prove that carbon coated particles with a Fe, Co, and Ni core are formed. High-resolution transmission electron microscopy images show that the nanoparticles have a size distribution from 2 to 100 nanometers and display the core/shell structure with one or more particles forming the core in a particular shell. From X-ray diffraction peaks the phase of the core material is confirmed and the average particle size is determined from the width of the peaks to be 16, 21, and 19 nm for Fe@C, Co@C, and Ni@C, respectively The coated nanoparticles are ferromagnetic at least up to 400 K. AC magnetic heating studies have been performed which imply their potential for applications in hyperthermia therapy. (C) 2009 Elsevier Ltd. All rights reserved.