Sintered magnet

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PROBLEM TO BE SOLVED : To improve characteristics of a magnetic material without using heavy rare earth elements of scarce resources. SOLUTION : A fluorine-containing grain boundary phase is formed between a rare earth-iron crystal grain and an iron-cobalt alloy crystal grain, and magnetic coupling is developed in the iron-cobalt alloy crystal grain and the rare earth-iron crystal grain with an eccentrically-located rare earth element, so that a high energy product is achieved. A sintered magnet having a high saturation magnetic flux density, a coercive force of 10 kOe or more, and a Curie point of 600 K or more can be obtained when a weight of the iron-cobalt alloy crystal grain is in a range from 0.1 to 90% by weight relative to a weight of the entire sintered magnet. COPYRIGHT : (C)2012, JPO&INPIT