Method of manufacturing Sm—Fe—N magnet, Sm—Fe—N magnet, and motor having Sm—Fe—N magnet

A method of manufacturing an Sm—Fe—N magnet, comprising:

• a sealing step of filling a metal sheath with a magnet powder comprising an Sm—Fe—N compound as a main component and sealing the metal sheath;
• a magnetic field applying step of applying a magnetic field to the magnet powder sealed in the metal sheath and magnetizing the magnet powder by magnetically orienting the magnet powder and aligning a direction of magnetic orientation in one direction;
• a preliminary rolling step of preliminarily rolling the magnetically oriented magnet powder sealed in the metal sheath to make the magnetically oriented magnet powder into a green compact;
• and
• a pressurizing step of pressurizing the green compact sealed in the metal sheath and densifying the green compact to form a magnet body,
• wherein in the preliminary rolling step, the preliminary rolling is performed by lightly rolling the magnetically oriented magnet powder sealed in the metal sheath with a pressure smaller than a pressure in the pressurizing step, and
• wherein in the preliminary rolling step, the magnetically oriented magnet powder sealed in the metal sheath is preliminarily rolled in a direction orthogonal to the direction of magnetic orientation.