Te-free, Sb-based phase-change materials for high-speed rewritable optical recording

Abstract

High-speed rewritable optical disks based on conventional (eutectic) Sb–Te phase-change materials have low archival life stability and high media noise. We propose Te-free, Sb-based phase-change materials for recording at linear velocities over 28 m/s. These materials combine good optical contrast, rapid crystallization, and high amorphous phase stability.