Many magnetic materials display a magnetic hysteresis when subjected to a magnetic field that alternates direction.
The mechanism, an organization of the polarization into domains, is similar to that of magnetic hysteresis.
Monopolar designs also compensate for the magnetic hysteresis of the core.
For a general problem the relationship is non-linear (see also magnetic hysteresis).
It is a simple example of magnetic hysteresis and is useful for modeling small magnetic particles in magnetic storage, biomagnetism, rock magnetism and paleomagnetism.
The Stoner-Wohlfarth model is a classic example of magnetic hysteresis.
Eddy currents can, however, be generated in any conductor, and magnetic hysteresis can occur in any magnetic material.
The coercivity is a measure of the degree of magnetic hysteresis and therefore characterizes the lossiness of soft magnetic materials for their common applications.
In this temperature range, SMMs exhibit magnetic hysteresis of purely molecular origin.
Based on Steinmetz experiments, Steinmetz' formula defines the approximate heat energy due to magnetic hysteresis released per cycle per unit area of magnetic material.