GRAIN ORIENTED ELECTRICAL STEEL SHEET HAVING EXCELLENT CORE LOSS, AND METHOD FOR MANUFACTURING SAME

The present invention relates to a grain oriented electrical steel sheet having excellent core loss and to a method for manufacturing same. The electrical steel sheet according to one aspect of the present invention may have a composition comprising, by weight %, Si : 1.0 to 4.0%, Al : 0.1 to 4.0%, and a rare earth element : 0.0001 to 0.5% by the total content of the whole rare earth element.