GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND METHOD FOR PRODUCING SAME

摘要

Provided is a grain-oriented electrical steel sheet having a low core loss and subjected to magnetic domain segmentation treatment in which iron loss factors are eliminated. A grain-oriented electrical steel sheet having a forsterite coating film on the surface of the steel sheet, a Se-concentrated part within the aforementioned coating film and/or on the boundary of the aforementioned coating film and the steel sheet, and a concentration of the aforementioned concentrated part of 2% or more by area ratio per 10000 µm2 of the surface of the steel sheet is subjected to magnetic domain segmentation treatment by means of electron beam irradiation.