PERMANENT MAGNET

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The purpose of the present invention is to provide a low-cost permanent magnet which has higher magnet characteristics than conventional ordered alloy-based permanent magnets, while containing no rare earth element as a constituent element. A permanent magnet according to the present invention contains no rare earth element, and is characterized by containing an FeNi ordered phase in which a third element is diffused. This permanent magnet is also characterized in that : the third element is C, N or Co; and the concentration of the third element decreases from the surface of the permanent magnet toward the inner side thereof and/or the concentration of the third element decreases from the surfaces of crystal grains of the FeNi ordered phase toward the inner sides thereof.