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 deterioratin g soft magnetic properties. During the investigation, the magnetic properti es of final annealed sheets were found to be directly related to the magnet ic properties of final cold rolled sheets. X-ray and transmission electron microscopy were used to understand the above relation. It was found that th e fraction of (110) grains at the surface of the final cold rolled sheets s ignificantly affected the final magnetic properties of the final annealed s heets. On the basis of the above argument, the final magnetic properties of the thin gauged Si-Fe sheets can be predicted by the B-10 values of the fi nal cold rolled sheets. (C) 1998 American Institute of Physics. [S0021-8979 (98)34811-2].