Optisches Aufzeichnungsmaterial mit Phasenänderung, das wiederbeschreibbar ist, und wiederbeschreibbare, optische Platte mit Phasenänderung

摘要

The present invention discloses a rewritable phase-change optical disk having a recording material of a five-element alloy, Te-(Ge,Bi,Sb)-X, wherein X is B (boron) or C (carbon); Te (tellurium) ranges from 47 to 60 atomic percentage (at.%); Ge (germanium) ranges from 12 to 48 at.%; and Si (silicon) together with Sb (antimony) range from 5 to 41 at.%, based on the total atomic number of Te, Ge, Bi and Sb; and B or C range from 0.05 to 4 at.%, based on the total atomic number of Te, Ge, Bi, Sb and X.