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

相关论文

共 35 条

[1] Developments in the processing and properties of NdFeb-type permanent magnets [J].

Brown, D ;

Ma, BM ;

Chen, ZM .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 248 (03) :432-440

[2] Arc plasma route to carbon-encapsulated magnetic nanoparticles for biomedical applications [J].

Bystrzejewski, M ;

Huczko, A ;

Lange, H .

SENSORS AND ACTUATORS B-CHEMICAL, 2005, 109 (01) :81-85

[3] Arc plasma synthesis of carbon encapsulates containing Fe-Nd-B [J].

Bystrzejewski, M ;

Lange, H ;

Huczko, A .

HIGH TEMPERATURE MATERIAL PROCESSES, 2005, 9 (02) :237-243

[4] Arc plasma synthesis of (Fe-Nd-B)-containing carbon encapsulates [J].

Bystrzejewski, M ;

Huczko, A ;

Lange, H ;

Baranowski, P ;

Kozubowski, J ;

Wozniak, M ;

Leonowicz, M ;

Kaszuwara, W .

FUNCTIONAL NANOMATERIALS FOR OPTOELECTRONICS AND OTHER APPLICATIONS, 2004, 99-100 :273-276

[5] Induction plasma synthesis of fullerenes and nanotubes using carbon black-nickel particles [J].

Cota-Sanchez, G ;

Soucy, G ;

Huczko, A ;

Lange, H .

CARBON, 2005, 43 (15) :3153-3166

[6] CCVD synthesis and characterization of cobalt-encapsulated nanoparticles [J].

Flahaut, E ;

Agnoli, F ;

Sloan, J ;

O'Connor, C ;

Green, MLH .

CHEMISTRY OF MATERIALS, 2002, 14 (06) :2553-2558

[7] Nanoparticles probe biosystems [J].

Gould, Paula .

MATERIALS TODAY, 2004, 7 (02) :36-43

[8] A simple technique for the synthesis of filled carbon nanoparticles [J].

Harris, PJF ;

Tsang, SC .

CHEMICAL PHYSICS LETTERS, 1998, 293 (1-2) :53-58

[9] Carbon nanotubes and spheres produced by modified ferrocene pyrolysis [J].

Hou, HQ ;

Schaper, AK ;

Weller, F ;

Greiner, A .

CHEMISTRY OF MATERIALS, 2002, 14 (09) :3990-3994

[10] Influence of Fe and Co/Ni on carbon arc plasma and formation of fullerenes and nanotubes [J].

Huczko, A ;

Lange, H ;

Sogabe, T .

JOURNAL OF PHYSICAL CHEMISTRY A, 2000, 104 (46) :10708-10712

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