The physical and mechanical properties and the chemical behavior of bulk metallic glasses (BMGs) have been described in the previous chapters. It has been shown that these BMGs have excellent combination of properties and based on this, some applications have been suggested. These will be described in Chapter 10. But, the most important application to which the melt-spun glassy ribbons have been put to is in transformer core laminations based on the excellent soft magnetic properties of these alloys. Therefore, a signicant amount of effort has been spent on investigating the magnetic properties of BMG alloys.