Magnetic Properties of Iron Core Materials Based on the Creep Model and Dynamic Observation of Magnetic Domains

Changes in the magnetic properties of iron core materials are essentially caused by changes in the magnetization state of magnetic domains. In order to accurately demonstrate the magnetic properties, this paper observes the magnetization process of the iron core material through magneto-optical Kerr microscope and processes the observed image video and extracts the velocity of the domain wall motion. It is verified that the extracted velocity has a linear relationship with the applied magnetic field in accordance with the creep model. Based on the observed results this paper employs the velocity to improve the pinning energy in the multi-scale energy model and the validity of the model was verified.