SmCo magnets are produced by samarium, cobalt and other metal powders. There have SmCo5 and Sm2Co17. SmCo has the higher max. energy, and Sm2Co17 exhibit superior temp. characteristics and corrosion resistance compared to the SmCo5.

With its high magnetic properties, low temp. coefficient, excellent corrosion resistance and thermal stability, SmCo magnets are widely used in motors, sensors, transducers, detectors, radar communications etc. SmCo magnet is price sensitive material, and the expensive cost limit its development in some way.