... magnetic material. Due to its strong corrosion resistance, SmCo magnet need not to be coated since it is ... .SmCo magnet is widely used in space probe, national defense and military, microwave appliance, communication, medical equipments, motors, instruments, various ... , magnetic properties of SmCo magnet is better than NdFeB magnet. Thus, SmCo magnets are widely used in fields such as aeronautics ...