US 7,255,906 B2 · Information recording medium and method for producing the same

Abstract

In an information recording medium of the present invention, a recording layer and first and second dielectric layers are formed on a surface of a substrate. In the recording layer, at least one of recording and reproduction is caused by irradiation of light or application of electric energy. The dielectric layers are oxide-based material layers or oxide-nitride-based material layers containing an oxide of at least one element selected from the group GM consisting of Sn, Ga and Zn, and at least one of an oxide and a nitride of at least one element selected from the group GL consisting of Al, Si and B, or oxide-fluoride-based material layers containing a fluoride of at least one element selected from La and Ce, and one example of at least one of element selected from the group GM.

Claims51

Dependent claims

An information recording medium comprising a substrate and a recording layer that allows at least one of recording and reproduction by irradiation of light or application of electric energy,

further comprising a material layer containing at least one element selected from the group GM consisting of Sn, Ga and Zn, at least one element selected from the group GL consisting of Al, Si and B, and oxygen (O), and optionally nitrogen (N),
wherein when the at least one element selected from the group GM is Ga or Zn, the elements of the group GL are present in the form of nitride.

Dependencies are inferred from the claim text.

Information recording medium and method for producing the same

Life of this patent

Information recording medium and method for producing the same

Life of this patent

Abstract

Claims51