Mixed rare-earth based high-coercivity permanent magnet

摘要

A system and method for a permanent magnet having boron, iron, and a rare-earth material. The rare-earth material includes neodymium, at least 50 weight percent praseodymium, 0-20 weight percent terbium, and 5-25 weight percent dysprosium, wherein the permanent magnet comprises an intrinsic cocrcivity of at least 17 kilo Oersteds. Due to this high intrinsic coercivity, the permanent magnet may be subjected to high-temperature (e.g., greater than 80 °C) applications (e.g., as a component of a motor, generator, and so forth). In one exemplary application, a generator within a commercial wind turbine or windmill incorporates 3 tons of the permanent-magnet material.