Reliability of the Phase Change Optical Disk

Autor: Kusato Hirota, Kusato Hirota, Gentaro Ohbayashi, Gentaro Ohbayashi
Zdroj: Japanese Journal of Applied Physics; October 1997, Vol. 36 Issue: 10 p6398-6398, 1p
Abstrakt: Thermal stability of the Al-alloy reflective layer is essential for the archival life of a rewritable phase change optical disk. The new Al-Hf-Pd alloy reflective layer provides excellent thermal stability. A disk using this Al-alloy and a Pd-Ge-Sb-Te alloy recording layer is extremely stable. The bit-error-rate (BER) of the recorded signal did not change substantially after an acceleration test of 6,800 h under the conditions of 90° C, 80%RH. X-ray diffraction analysis showed that the new additive components (Hf, Pd) of the Al-alloy prevented the growth of the Al crystals.
Databáze: Supplemental Index