RARE-EARTH-IRON-NITROGEN MAGNETIC MATERIAL AND BOND MAGNET USING IT

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PROBLEM TO BE SOLVED : To provide a rare-earth-iron-nitrogen magnetic material which shows oxidation resistance and superior magnetic properties, and particularly has high saturation magnetization, and to provide a bond magnet using it. SOLUTION : The rare-earth-iron-nitrogen magnet material to be used is expressed by general formula : RaFe(100-a-b-c-d)MnbMcNd (wherein, R is one or more elements selected among rare earth elements; M is one or more elements selected among the group consisting of Ni, Cu, Co, Cr and V; and a, b, c and d are atomic percentage while they must satisfy the following four requirements : 3≤a≤20, 0.01≤b<0.5, 0.01≤c≤25 and 17≤d≤25).