Wang Yiping, Li Yang, Rong Chuanbing, Liu J Ping
Department of Physics, The University of Texas at Arlington, Arlington, TX 76019, USA.
Nanotechnology. 2007 Nov 21;18(46):465701. doi: 10.1088/0957-4484/18/46/465701. Epub 2007 Oct 12.
Hard magnetic nanoparticles based on the Sm(2)Co(17) and SmCo(5) systems have been successfully produced using a surfactant-assisted ball milling technique. A size-selection process has been developed to obtain nanoparticles of different sizes with narrow size distribution. Significant room-temperature coercivity up to 3.1 kOe has been achieved with the Sm(2)Co(17)-based nanoparticles of an average size of 23 nm. It has been found that surfactants play multifold roles in the processing.
基于Sm(2)Co(17)和SmCo(5)体系的硬磁纳米颗粒已通过表面活性剂辅助球磨技术成功制备。已开发出一种尺寸选择工艺，以获得具有窄尺寸分布的不同尺寸的纳米颗粒。平均尺寸为23nm的基于Sm(2)Co(17)的纳米颗粒在室温下实现了高达3.1kOe的矫顽力。已发现表面活性剂在该工艺中发挥多种作用。
