MAGNETO-OPTICAL RECORDING MEDIUM AND MAGNETO-OPTICAL RECORDER USING THE MEDIUM

摘要

A Co thin film for magneto-optical recording is made of a material having a large polar rotation angle in an ultraviolet region to achieve high density recording. A Co thin film (14) is vacuum deposited on an Si substrate with a Cu seed layer (12) therebetween. The orientation of the Si substrate is (100) or (111). The thicknesses of the Cu seed layer (12) and the Co thin film (14) are both approximately 100 nm. The Co thin film (14) is a single crystal thin film having a face-centered cubic lattice structure with an orientation of (100) or (111). Such a Co thin film (14) has a polar rotation angle of maximum 0.4 DEG in the ultraviolet wavelength region of 200-230 nm.