Back to results
US 5,700,567 AGranted
Magneto-optical recording medium
AssigneeTDK Corporation
InventorHajime Utsunomiya
Life of this patent
Estimating the term…
Abstract
In a magneto-optical recording medium comprising a first dielectric layer, a recording layer, a second dielectric layer, and a metal reflective layer stacked on a substrate, the second dielectric layer is formed of a mixture of a rare earth element oxide, silicon oxide, and silicon nitride. The medium has increased recording sensitivity and provides stable recording/reproducing performance with low error rate and high resolution.
Claims9
A magneto-optical recording medium comprising a first dielectric layer, a recording layer, a second dielectric layer, and a metal reflective layer stacked on a substrate in the described order,
- said second dielectric layer consisting essentially of at least one oxide of La and Ce, silicon oxide and silicon nitride,
- said first dielectric layer consisting essentially of silicon nitride, and
- said metal reflective layer consisting essentially of an aluminum alloy containing nickel.
Dependencies are inferred from the claim text.