AlNiCo magnets feature a high remanent induction value and a low coercive force value. The maximum energy product is at the level of approx. 60 kJ/m3. The development of dependence of induction on the magnetic field intensity in the second quadrant of the hysteresis loop is strongly non-linear, with a considerable bend. For that reason, AlNiCo magnets are very sensitive to demagnetisation by external magnetic field or when they are removed from a closed magnetic circuit.
AlNiCo magnets are used in applications where easy remagnetisation by an electromagnetic field to the opposite polarity is required. A typical example is an electropermanent adhesion system.