Preparation and Magnetic Properties of Carbon Encapsulated Fe-Cu Alloy Nanoparticles

Abstract:

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, trans- mission electron microscopy and Raman spectroscopy. The results showed the sample was core / shell structure, the metalic core was crystalline FeCu4 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 Ms of 13.01 emu/g, residual magnetization Mr of 0.37 emu/g and coercive forces Hc of 54.43 Oe at room temperature.

• Periodical: Advanced Materials Research (Volume 177)
• Pages: 673-676
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.177.673
• Online since: December 2010
• Authors: Jun Xue, Hou Kui Xiang, Hong Qiao Ding, Shu Li Pang, Xue Hua Wang, Hong Cao
• Keywords: Carbon, Core-Shell Structure, Fe-Cu Alloys Nanoparticle, Magnetic Property

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