Domain wall angles in 3% silicon-iron with a

Domain wall angles have been measured in well oriented grains in commercial 3% silicon-iron laminations. The range of angles measured is in good agreement with theoretical calculations. Under an applied tensile stress the wall angles show a tendency to increase, contrary to theoretical predictions. Possible reasons for this behaviour are discussed. The dynamic wall angles decrease towards zero as the flux density is raised. This is believed to be brought about by the ruckling motion of the walls.