New method to predict the magnetic properties of thin gauged Si-Fe sheets

A tertiary crystal growth method was used to fabricate thin gauged 3% Si-Fe sheets in order to reduce the thickness of the sheets without deteriorating soft magnetic properties. During the investigation, the magnetic properties of final annealed sheets were found to be directly related to the magnetic properties of final cold rolled sheets. X-ray and transmission electron microscopy were used to understand the above relation. It was found that the fraction of (110) grains at the surface of the final cold rolled sheets significantly affected the final magnetic properties of the final annealed sheets. On the basis of the above argument, the final magnetic properties of the thin gauged Si-Fe sheets can be predicted by the B₁₀ values of the final cold rolled sheets.