| 摘要 |
A rare earth permanent magnet alloy having a composition expressed as RxF100-(x+y+z+m+n)ByTzMmDn. In this formula, R is one or more of rare earthy elements, such as neodymium, lanthanum, cerium, dysprosium and/or praseodymium; F is Fe or Fe and up to 20 atomic percent of Co by substitution; B is boron; T is one or more elements selected from the group of Ti, Zr, Cr, Mn, Hf, Nb, V, Mo, W and Ta; M is one or more elements selected from the group of Si, Al, Ge, Ga, Cu, Ag, and Au; and D is one or more elements selected from the group of C, N, P, and O. In this formula, x, y, z, m, n are atomic percentages in the ranges of 3<x<15, 4<y<22, 0.5<z<5, 0.1<m<2, and 0.1<n<4. Fine amorphous particles of such alloy are made by atomization and/or splat-quenching. Both substantially-spherical, irregular and substantially plate-like particles are simultaneously produced.
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