Title :
Polyol Process for Fe-Based Hard(fct-FePt) and Soft(FeCo) Magnetic Nanoparticles
Author :
Jeyadevan, B. ; Shinoda, K. ; Justin, R.J. ; Matsumoto, T. ; Sato, K. ; Takahashi, H. ; Sato, Y. ; Tohji, K.
Author_Institution :
Graduate Sch. of Environ. Studies, Tohoku Univ.
Abstract :
The polyol process and the parameters influencing the synthesis of metal and alloy nanoparticle are discussed. Then, the synthesis strategies to obtain hard (Fe-Pt) and soft (Fe-Co) nanoparticles by using polyol process is presented. Under optimum synthesis conditions, partially ordered Fe-Pt nanoparticles with an average grain diameter of 8 nm exhibited a coercivity of 460 kA/m in the as-synthesized state. In the case of Fe-Co alloy particles, synthesis technique to prepare particles with varying Fe concentration in the size ranging between 300 and 50 nm is reported
Keywords :
cobalt alloys; coercive force; iron alloys; magnetic particles; nanoparticles; permanent magnets; soft magnetic materials; 8 nm; Fe-Co alloy particles; Fe-based hard magnetic nanoparticles; Fe-based soft magnetic nanoparticles; FeCo; FePt; alloy nanoparticle; metal nanoparticle; partially ordered Fe-Pt nanoparticles; polyol process; Coercive force; Helium; Inorganic materials; Iron alloys; Magnetic materials; Magnetic properties; Nanoparticles; Oxidation; Soft magnetic materials; Temperature; Co alloys; FeCo; FePt; polyol process; soft magnetic materials;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.880149
