The problem with iron nitride is, and always has been, low coercivity. Niron hopes that GM can help them figure out a way to design a traction motor that has hi

The problem with iron nitride is, and always has been, low coercivity. Niron hopes that GM can help them figure out a way to design a traction motor that has high performance even with low coercivity magnets. The fact that there are no such motors using iron-nitride magnets suggests that those efforts haven't succeeded yet. https://spectrum.ieee.org/permanent-magnet-motor https://spectrum.ieee.org/permanent-magnet-motor