Computation of Local Magnetization Curve from Visualized Magnetic Domain Dynamics By Bitter Method

To compute the magnetic fields in electrical machines as well as various instruments driven by electric motor or actuator, it is of paramount importance to know the local magnetization characteristics of ferromagnetic materials constituting such electronic devices. We are now developing one of the local magnetization characteristics methods by means of the simple dynamic magnetic domain movement visualization. Even through our approach makes it possible to know the local magnetization characteristics referenced on the global magnetization curve, the computed local magnetization characteristics at distinct positions of ferromagnetic thin sheet reveals enormous microscopic characters of the ferromagnetic materials