Phase-change recording element for write-once applications

摘要

A WORM optical recording element comprising a substrate and a phase-change recording layer wherein the phase-change recording layer has a composition expressed by SbaXbSncZnaSieOf Sh wherein X is an element selected from In, Ge, Al, Zn, Mn, Cd, Ga, Ti, Si, Te, Nb, Fe, Co, W, Mo, S, Ni, O, Se, Tl, As, P, Au, Pd, Pt, Hf, or V and a>0, b>0, c>0, d>0, e>0, f>0, h>0, and a + b + c + d + e + f + h = 100.