Preparation of Nd–Fe–B nanoparticles by surfactant-assisted ball milling technique
Preparation of Nd–Fe–B nanoparticles by surfactant-assisted ball milling technique
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DOI：
10.1063/1.3059228
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发表时间：
2009-02
影响因子：
3.2
通讯作者：
M. Yue;Y. Wang;N. Poudyal;C. Rong;J. Liu
中科院分区：
文献类型：
--
作者：
M. Yue;Y. Wang;N. Poudyal;C. Rong;J. Liu
采用表面活性剂辅助球磨和随后的粒度选择技术制备了Nd-Fe-B纳米颗粒。结构分析表明，得到了粒径分别为10 nm和100nm的纳米颗粒。部分非晶Nd-Fe-B纳米颗粒的室温矫顽力分别为0.1和1.5kOe左右。当温度降低到200K时，由于Nd2Fe14B相的磁晶各向异性增强，大颗粒的矫顽力增加了50%。
Nd–Fe–B nanoparticles have been obtained by using surfactant-assisted ball milling and subsequent size-selection technique. Structural analyses show that nanoparticles with two particle sizes around 10 and 100nm were obtained. The partially amorphous Nd–Fe–B nanoparticles give their room-temperature coercivities around 0.1 and 1.5kOe for the small and large nanoparticles, respectively. As the temperature decreases to 200K, the coercive force of the large nanoparticles increases by 50% due to the enhancement of the magnetocrystalline anisotropy of the Nd2Fe14B phase in the particles.