Effects of particle size and composition on coercivity of Sm-Co nanoparticles prepared by surfactant-assisted ball milling
Effects of particle size and composition on coercivity of Sm-Co nanoparticles prepared by surfactant-assisted ball milling
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DOI：
10.1063/1.3334460
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发表时间：
2010-05-01
影响因子：
3.2
通讯作者：
Liu, J. Ping
中科院分区：
文献类型：
--
作者：
Poudyal, Narayan;Rong, Chuan-bing;Liu, J. Ping
采用表面活性剂辅助球磨技术制备了不同组成的SmCox （x=3.5、4、5、6、8.5和10）磁性纳米颗粒。通过控制沉淀时间和离心条件，成功获得了不同粒径、粒径分布较窄的SmCox纳米颗粒。随着Sm含量的增加，SmCo纳米颗粒变得不稳定。SmCox纳米颗粒的矫顽力随Co含量和粒径的增加而增加，表明粒径和组分对其磁硬化有复杂的影响。(C) 2010年美国物理研究所。(doi: 10.1063/1.3334460)
The SmCox (x=3.5, 4, 5, 6, 8.5, and 10) magnetic nanoparticles with different composition have been prepared by surfactant-assisted ball milling technique. By controlling the settle-down time and the centrifugation conditions, the SmCox nanoparticles with different particle size and narrow size distribution were successfully obtained. It was observed that the SmCo nanoparticles become unstable with increasing Sm content. It was also observed that the coercivity of the SmCox nanoparticles increases with Co content and particle size, indicating a complex effect of the particle size and composition on magnetic hardening of the hard magnetic nanoparticles. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3334460]