Oriented Electromagnetic Steel Sheet

Abstract: Provided is an oriented electromagnetic steel sheet having a base steel sheet, an intermediate layer, and an insulating film, wherein: the intermediate layer is an oxidized film; the average film thickness of the oxidized film is 2-500 nm; the insulating film is a phosphoric acid-based film; the average film thickness of the phosphoric acid-based film is 0.1-10 µm; when fine angle incidence X-ray diffraction is performed on the phosphoric acid-based film using a Co-Ka excitation source, the X-ray diffraction pattern has a diffraction peak derived from cristobalite-type aluminum phosphate at a diffraction angle of 2?=24.8°; and a full width at half maximum FWHM0.5 of the diffraction peak under a diffraction condition with an X-ray incident angle ?=0.5° and a full width at half maximum FWHM1.0 of the diffraction peak under a diffraction condition with an X-ray incident angle ?=1.0° satisfy 0.20°=FWHM0.5=2.00°, 0.20°=FWHM1.0=2.00°, and 0°=|FWHM0.5-FWHM1.0|=1.00°.

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