This is made possible by the development of more efficient ferrites and their corresponding hysteresis curves.

The layers are made of two materials with different magnetic coercivity, which can be seen in the layers' hysteresis curves.

By measuring in the field of an external electromagnet, it is possible to obtain the hysteresis curve of a material.

B being so sluggish, it is usually referred to as the hysteresis curve.

Note that the B-H relationship is irreversible everywhere inside the hysteresis curve.

For permanent magnets a wide hysteresis curve is needed so that demagnetization should not easily occur.

The hysteresis curve is inverting and the switching thresholds are .

This magnetization as a function of the external field is described by a hysteresis curve.

They exhibit a characteristic hysteresis curve, which causes unwanted distortion of the signal.

As well, with increasing , the true hysteresis curve is approximated better.