Abstract
Magnetostriction in modern (110)[001] grain-oriented Si-Fe sheets can be understood by considering magnetic domain structures and their variation with magnetization on the basis of magnetic domain theory. Magnetostrictive elongation in g.o. sheets is dominated by the behavior of 90° domain walls included in subdomains which appear in the main domains carrying the magnetization of the [001] direction. The relationship among magnetostriction, the static domain structure and process of magnetization is reviewed with respect to g.o. sheets with conventional thickness and ones with extremely reduced thickness. Losses are reviewed in relation to the domain structure and its variation during magnetization.
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