Hysteresis Loss in Thinned Single Crystals of 3% Si-Fe

The relation between the inclination angle of the [001] axis ß and hysteresis loss in Si-Fe single crystal sheets was studied. No appreciable increase in the range 0° to 2° was found, but from 2° to 3° rapid increase was observed. This seems to be due to the facts that when ß is in the low angle range below 2°, surface closure domains exist separately and independently, and above 2° the closure domains couple together and form an aggregate structure.