Abstract
A hard magnetic powder of Co–Zn–P alloy was produced by chemical reduction. The powder had a spherical shape with an average diameter of about 1μm. The Co–Zn–P alloy powder mainly consisted of the hcp-Co and Co2P phases. The saturation magnetization of the Co–Zn–P powder decreased as its Zn content increased. On the other hand, the addition of Zn to Co–P alloy powder resulted in an increase in the coercivity. Co–Zn–P alloy powder with a Zn content of 4wt% showed a remanence of 45.3emu∕g with a coercivity of 1.64kOe.
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