Tin Alloy Nitride Write-Once Media for Solid Immersion Lens System

Abstract

We studied a high-numerical-aperture (NA) solid immersion lens (SIL) system using tin alloy nitride write-once recording media with a protective cover layer. The jitter value of the disk that was recorded by this system was 8.5% at 100 GB capacity with a track pitch of 160 nm and a bit length of 56.25 nm. We confirmed the feasibility of the SIL-R disk using these recording media with the high-density recording SIL system.