Abstract
A brief review is given about the researches on rare earth permanent magnets conducted in 15 years since the NdFeB permanent magnet was presented. It is then pointed out that important subjects left behind are development of a net-shape-process for NdFeB sintered magnets and development of NdFeB sintered magnets containing not much Dy that can be used up to 200°C or so. To develop such magnets, the mechanism of nucleation of reversed domain has to be clarified.
