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Preparation and magnetic properties of carbon encapsulated Fe-Cu alloy nanoparticles

Advanced Materials Research, ISSN: 1022-6680, Vol: 177, Page: 673-676
2011
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Conference Paper Description

Carbon encapsulated Fe-Cu alloys nanoparticles were synthesized by using ferric nitrate, copper nitrate as metal sources and using sucrose as carbon source. The synthesis process involved a step of hydrazine hydrate reduction in alcohol solution and a step of annealing carbonization. The as-prepared samples were characterized by X-ray diffraction technique, X-ray energy dispersion spectrograph, transmission electron microscopy and Raman spectroscopy. The results showed the sample was core/shell structure, the metalic core was crystalline FeCu alloy, the shell was amorphous carbon, and the average particle size was about 51nm. The magnetic measurement by using a vibrating sample magnetometer revealed that the sample has ultra-soft magnetic property with the saturation magnetization M of 13.01 emu/g, residual magnetization M of 0.37 emu/g and coercive forces H of 54.43 Oe at room temperature. © (2011) Trans Tech Publications.

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