Temperature characteristics and temperature coefficient of ferrite magnets

Ferrite magnets have a positive intrinsic coercivity temperature coefficient (which varies by + 0.27% / degree Celsius relative to the environment), and only ferrite can express this characteristic so much. However, the magnetic output will decrease with the increase of temperature (its negative induction temperature coefficient is - 0.2% / degree Celsius). The end result is that ferrite magnets can be used at high temperatures with little problem.

Ferrite magnets can be used up to + 250 ° C (up to + 300 ° C in some cases), so they are very suitable for motors and most high temperature applications. At temperatures below zero, for example, below - 10 to - 20 degrees Celsius, ferrite magnets may begin to exhibit reduced tensile strength. That is, the temperature and the degree of attenuation depend on the shape of the magnet and are application specific. In most applications, the operating temperature is not sufficient to produce this effect.