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Synthesis and Soft Magnetic Properties of Mg-doped Ni Nanoparticles


  Mg-doped Ni nanoparticles with good soft magnetic properties were prepared with the sol-gel method and were sintered at 400, 500, 600, and 900 °C in argon atmosphere, respectively. The structure and magnetic properties of the samples were studied by means of X-ray diffraction, TEM, and VSM magnetometers. X-Ray powder diffraction results show that Ni-Mg solid solution was formed with the single phase of face-centered cubic(fcc) structure. The particle size became larger with the increase of temperature. When the sintering temperature was 400 °C, the particle size was 6.3 nm, whereas it was 46.2 nm at 900 °C. Both the saturation magnetization(Ms) and the coercivity were enhanced with the increase of the particle size. The Ms values of the samples ranged from 18.965 to 46.766 emu/g and the coercivity ranged from 1051.3568 to 9145.0848 A/m.……   
[关键词]:Mg;Ni;Nanoparticles;Soft magnetic property;Sol-gel method
[文献类型]:期刊
[文献出处]: 《Chemical Research in Chinese Universities2008年05期
[格式]:PDF原版; EPUB自适应版(需下载客户端)