Why does the silicon steel sheet demagnetize when it is tested?

- Dec 16, 2019-

The demagnetization state of the sample means a state in which the magnetic strength H and the magnetic induction B are simultaneously zero, and this state is sometimes referred to as a magnetic neutral state, and the process of demagnetizing the sample is referred to as magnetic neutralization. Because the hysteresis loop is a process in which the magnetic properties of the sample change with the change of the external magnetic field. If the sample starts to have magnetic properties, the hysteresis loop will not start from the zero point, and the hysteresis loop will be irregular.