POSCO Holdings Inc.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MAGNETIC DOMAIN REFINEMENT METHOD THEREFOR

Abstract:

A grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention incudes a groove formed on a surface and a solidified alloy layer formed under the groove, wherein the solidified alloy layer includes recrystallized particles of which an average particle diameter is 1 to 8 .mu.m.