FORMATION AND CHARACTERISTICS OF HARD MAGNETIC-MATERIALS - PR(MO,FE)12NX

We succeed in stabilizing the PrMo1.5Fe10.5 compounds and their nitrides with ThMn12-type structure. The single phase was identified by using x-ray diffraction technique and thermomagnetic measurements. In PrMo1.5Fe10.5Nx, the c-axis is the easy magnetization direction from 0 K to Curie temperature. The anisotropy field is up to 147 K Oe at 1.5 K and 110 K Oe at room temperature. In combination with a high Curie temperature of 640 K and a large saturation magnetization of 141.70 emu/g, these intrinsic magnetic properties are favorable for permanent magnet applications. As a preliminary attempt, a coercive force of 3.0 and 10.0 K Oe was obtained at 300 and 1.5 K, respectively, by using hydrogenation disproportionation and desorption (HDD) processing.Physics, AppliedSCI(E)27ARTICLE222723-27256