Influence of Demagnetization on the Domain Patterns of Grain-Oriented Silicon Steel.

This paper describes domain patterns in grain-oriented silicon steel after the application of rectangular wave induction in the easy and hard magnetization directions. More lancet domains appear after application of rectangular wave induction than after demagnetization by ac induction in the easy magnetization direction.In the hard magnetization direction, the 180° wall spacing and lancet domain density do not change after ac and rectangular wave demagnetization. The domain pattern suggests that the increase in the lancet domain and its deviation cause the ac magnetostriction deviation after application of rectangular wave induction.