Permanent magnets

Permanent magnets are tools that we can find inside many objects and machinery that surround us. The large number of existing applications is due to their versatility and the availability of different types of shapes and magnetization. The biggest limit of permanent magnets is the operating temperature, which is linked both to the degradation of the material and to the Curie temperature, i.e. the maximum temperature after that the total loss of magnetization occurs.

Comparison of materials: Br - HcJ

Br = Attractive force
HcJ = Resistance to demagnetization