Preparation and Magnetic Properties of Carbon Encapsulated Fe-Cu Alloy Nanoparticles
Carbon encapsulated Fe-Cu alloys nanoparticles were synthesized by using ferric nitrate, copper mtrate 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 asprepared 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 5lnm. The magnetic measurement by using a vibrating sample magjietometer revealed that the sample has ultra-sofi magnetic property with the saturation magnetization Ms of 13.01 emu/g,residual magnetization Mr of 0.3 7 emu/g and coercive forces Hc of 54.43 Oe at room temperature.
Carbon Fe-Cu alloys nanoparticle Core-shell structure Magnetic property
Jun Xue Hou Kui Xiang Hong Qiao Ding Shu Li Pang Xue Hua Wang Hong Cao
Wuhan Research Institute of Materials Protection,Wuhan 430030,China School of Materials Science and School of Materials Science and Engineering, Wuhan Institute of Technology,Wuhan 430074,China
国际会议
Frist Annual Meeting on Testing and Evaluation of Inorganic Materials(第一届全国无机材料测试与评价学术年会)
南昌
英文
673-676
2010-04-28（万方平台首次上网日期，不代表论文的发表时间）