Carbon encapsulation of magnetic nanoparticles

被引：14

作者：

Bystrzejewski, M. ^{[1
]}

Lange, H. ^{[1
]}

Huczko, A. ^{[1
]}

机构：

[1] Warsaw Univ, Dept Chem, PL-02093 Warsaw, Poland

来源：

FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES | 2007年 / 15卷 / 03期

关键词：

carbon anions; arc discharge; electron microscopy; Raman spectroscopy; magnetic properties;

D O I：

10.1080/15363830701236357

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon nanclencapsulates with the size between 20 and 50nm were produced by arc discharge method using graphite anode doped with Fe14Nd2B (27 and 42 wt.%). The obtained products are ferromagnetic, with the maximum coercive force equal to about 413 Oe. X-ray diffraction (XRD) of the purified products revealed the presence of different Fe, Nd and B phases. Structure and defects of the carbon coating were investigated by XRD and Raman spectroscopy. Optical emission spectroscopy was performed to determine average plasma temperature (5500-6000 K), and total carbon vapor pressure (10-60 kPa) depending on buffer gas pressure (13-60 kPa) and anode composition.

引用

收藏

页码：167 / 180

页数：14

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