The structure and coercivity (HC) of rapidly quenched FePt alloys were analyzed. The L10 structure was obtained by directly quenching the alloy melt and realize high HC without any heat treatment. The FePt alloy produced by Cu mold casting at a lower cooling rate than melt spinning was found to be composed of a mixed structure of Fe-Pt L10, ZrB12, PtZr and Fe3B phases. The lattice parameters (a and c) of the L10 phase in the melt-spun alloys suggested that Zr and B elements are contained in the L10 phase for the melt-spun alloys.
ASJC Scopus subject areas
- Physics and Astronomy(all)