RARE EARTH MAGNET AND ITS MANUFACTURING METHOD

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PROBLEM TO BE SOLVED : To provide a rare earth magnet which has high coercive force while suppressing lowering of magnetic flux density, and its manufacturing method. SOLUTION : A rare earth magnet M consists of a crystal grain 1 whose major phase is R12T14B phase (wherein R1 is at least one kind selected from rare earth elements except Dy and Tb, and T is at least one kind selected from transition metal elements), and in the crystal grain 1, R22T14 B phase (R2 is any one kind selected from heavy rare earth elements) is formed in an area 3 near its crystal grain boundary, and a grain diameter of the crystal grain 1 is at most 1 μm. COPYRIGHT : (C)2008, JPO&INPIT