RARE EARTH PERMANENT MAGNET AND PRODUCTION METHOD FOR RARE EARTH PERMANENT MAGNET

摘要

Provided are a rare earth permanent magnet and a production method for the rare earth permanent magnet that are capable of preventing a reduction in magnet characteristics. A mixture is generated by grinding a magnet raw material into a magnet powder and mixing the ground magnet powder and a binder comprising: a polymer or copolymer of monomers that do not include long chain hydrocarbons or oxygen atoms; or a mixture thereof. The generated mixture is formed into a sheet shape and a green sheet is produced. Then, the binder is decomposed into monomers, by performing a depolymerization reaction, etc., by holding the produced green sheet for a set period at a binder decomposition temperature in a non-oxidizing atmosphere, then scattered and removed, and a permanent magnet (1) is produced by increasing the temperature to a sintering temperature and sintering the binder-removed green sheet.