A description is given of a rewritable optical information medium having a phase-change recording layer (3) on the basis of an alloy of Ge-Sb-Te-O, having the composition (GeaSbbTec)1-dOd, wherein: a+b+c=1 0.0001</=d</=0.035. The addition of oxygen considerably speeds up the crystallization rate of Ge-Sb-Te materials. Such a medium is suitable for high speed recording (i.e. at least eight times the CD-speed), such as for DVD-RAM and optical tape. The amount of oxygen in the recording layer (3) can be used to tune the crystallization rate to the desired value.
申请公布号
WO9930317(A3)
申请公布日期
1999.08.12
申请号
WO1998IB01904
申请日期
1998.11.30
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS AB
发明人
ZHOU, GUO-FU;JACOBS, BERNARDUS, A., J.;RIJPERS, JOHANNES, C., N.;BORG, HERMANUS, J.
