Yiping Wang et al 2007 Nanotechnology 18 465701 doi:10.1088/0957-4484/18/46/465701
Yiping Wang, Yang Li, Chuanbing Rong and J Ping Liu
Show affiliationsHard magnetic nanoparticles based on the Sm2Co17 and SmCo5 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 Sm2Co17-based nanoparticles of an average size of 23 nm. It has been found that surfactants play multifold roles in the processing.
75.50.Tt Fine-particle systems; nanocrystalline materials
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
Condensed matter: electrical, magnetic and optical
Issue 46 (21 November 2007)
Received 6 June 2007, in final form 7 September 2007
Published 12 October 2007
Yiping Wang et al 2007 Nanotechnology 18 465701
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