초록 ▼

In a magneto-optical recording element comprising a substrate, a magnetic layer and a dielectric layer, the dielectric layer is formed by deposition of a composition comprising Si3N4 and a refractive index-improving agent such as Al2O3 or Y2O3. This dielectric layer has a high refractive index and t

In a magneto-optical recording element comprising a substrate, a magnetic layer and a dielectric layer, the dielectric layer is formed by deposition of a composition comprising Si3N4 and a refractive index-improving agent such as Al2O3 or Y2O3. This dielectric layer has a high refractive index and the enhancement effect is improved. Moreover, this dielectric layer is excellent in the adhesion and resistance characteristics.

대표청구항 ▼

A magneto-optical recording element comprising a substrate, a dielectric layer containing silicon nitride, and a magnetic layer for magneto-optical recording having an axis of easy magnetization perpendicular to the film surface thereof, wherein the dielectric layer is a deposition film consisting e

A magneto-optical recording element comprising a substrate, a dielectric layer containing silicon nitride, and a magnetic layer for magneto-optical recording having an axis of easy magnetization perpendicular to the film surface thereof, wherein the dielectric layer is a deposition film consisting essentially of a composition comprising silicon nitride and a refractive index-improving agent selected from the group consisting of single elements, oxides, nitrides, sulfides and silicides of elements of the groups IIIa, IVa, VIa, IIb, IIIb, IVb and VIb of the Periodic Table, said refractive index-improving agent being present in an amount of 0.5 to 8.0 mole% based on the composition, said dielectric layer having a refractive index greater than 2.15.