1. For alloys, for magnetostrictive alloy TEFENOL-D, some special master alloys also have other uses
2. Used as fuel cell stabilizer,
3. Also used in the production of electronic devices As a component of rare earth magnetostrictive materials, terbium can be used in actuators, naval sonar systems, sensors, SoundBug devices and other magnetic mechanical devices. It is an important additive for NdFeB permanent magnets to increase Curie temperature and temperature coefficient.