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Morphological and magnetic characterization of Fe, Co, and FeCo nanoplates and nanoparticles prepared by surfactants-assisted ball milling

Authors :
J. Ping Liu
Narayan Poudyal
Chuanbing Rong
Source :
Journal of Applied Physics. 109:07B526
Publication Year :
2011
Publisher :
AIP Publishing, 2011.

Abstract

We report here the preparation of Fe, Co, and FeCo nanoplates and nanoparticles by ball milling in the presence of surfactants in organic solvents. By controlling the milling and centrifugation conditions, the Fe, Co, and FeCo nanoplates and nanoparticles with different sizes were successfully obtained, from the slurries and from the top part of the solutions, respectively. The thickness of the nanoplates is in the range of 20–200 nm and their diameter is from 5 to 30 μm. The Fe, Co, and FeCo nanoparticles of about 6 nm show superparamagnetic behavior at room temperature and are ferromagnetic at low temperatures with blocking temperatures of 33, 103, and 54 K, respectively. It is found that the surfactants play multifold roles in the process.

Details

ISSN :
10897550 and 00218979
Volume :
109
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi...........3e1cbd6b3900d79735bb38fcd9f2c039
Full Text :
https://doi.org/10.1063/1.3561157