Soft Magnetic Materials: Fe-Si Alloys to Amorphous Alloys

This lecture covers the technologically relevant soft-magnetic materials, focusing on Fe-Si alloys and Ni-Fe alloys. It discusses the characteristics of soft magnets, absolute values of losses in soft magnetic materials, and the processing of soft-magnetic Fe. The addition of silicon to iron, the properties of magnetic sheet steels, and the effects of Si addition are also explained. Furthermore, it delves into the properties of Ni-Fe alloys (Permalloy) and amorphous alloys, highlighting their applications and unique characteristics. The lecture concludes with a summary emphasizing the importance of soft magnets in various applications, the role of domain wall motion, and the benefits of tailored impurities to optimize performance.