Prospects of doped Sb-Te phase-change materials for high-speed recording

Materials optimization is a very important aspect in high-speed optical recording. It is observed that for doped Sb-Te phase-change materials, a high crystallization rate at elevated temperatures is often accompanied by a low archival life stability and high media noise. Although crystallization rate can be increased easily by tuning the phase-change material composition, the involved low archival life stability and/or high media noise may be a drawback for the application of doped Sb-Te materials in (ultra) high-speed recording.