Patent ID: 6331338
Filing Date: 2001-12-18
Classification: G11B,Y10T

Abstract:
A magneto-optical recording layer for short wavelengths of about 400 nm, said magneto-optical recording layer comprising an amorphous alloy of 20 to 30 atomic % of at least one light rare earth metal comprising Nd, at least two transition metals comprising Fe and Co, and a semi-metal comprising 0.5 to 5 atomic % B with respect to said alloy, and wherein said magneto-optical recording layer has a magnetic anisotropy energy in the range of about -3.5 to about 4.5.times.10.sup.6 ergs/cm.sup.3, a Kerr rotation angle in the range of about 0.05 to about 1.6 degrees at about 400 nm, and a Curie temperature in the range of about 160.degree. C. to about 190.degree. C.