Optical recording medium

An optical recording medium comprising:

• a first protective layer,
• a recording layer,
• a second protective layer, and
• a reflective layer formed in this order as viewed from the side of laser beam irradiation for recording and reproducing
• wherein, the recording layer comprises a phase-change material represented by any one of the following Composition Formula (1-1), Composition Formula (1-2), and Composition Formula (1-3);
• and the second protective layer comprises at least one selected from a material represented by the following Composition Formula (2), and a material represented by the following Composition Formula (3),
• Inα1Sbβ1X1γ1 Composition Formula (1-1)
• where X1 is at least one selected from Ge, Te, Zn, and Mn;
• α1, β1, and γ1 respectively represent an atomic ratio, where 0.10≦α1≦0.25, 0.65≦β1≦0.80, and 0.04≦γ1≦0.15,
• Gaα2Sbβ2Snγ2Geδ2X2∈2 Composition Formula (1-2)
• where X2 is at least one selected from Te, Zn, Mn, and In;
• α2, β2, γ2, δ2, and ∈2 respectively represent an atomic ratio, where 0.04≦α2≦0.09, 0.56≦β2≦0.79, 0.05≦γ2≦0.30, 0.03≦δ2≦0.19, and 0≦∈2≦0.09,
• Mnα3Sbβ3Snγ3Geδ3X3∈3 Composition Formula (1-3)
• where X3 is at least one selected from Te, In, Zn, and Bi;
• α3, β3, γ3, δ3, and ∈3 respectively represent an atomic ratio, where 0.04≦α3≦0.09, 0.56≦β3≦0.79, 0.05≦γ3≦0.29, 0.03≦δ3≦0.23, and 0≦∈3≦0.09,
• ZnO—Al—Y[(100−α4−β4):α4:β4] Composition Formula (2)
• where Y is at least one selected from Mn, Ge, and Ti;
• α4 and β4 respectively represent a percent by mass, where 0.5≦α4≦10.0, and 0≦β4≦25.0,
• ZnO—Al2O3—Z[(100−α5−β5):α5:β5] Composition Formula (3)
• where Z represents any one of an Mn oxide, a Ge oxide, a Ti oxide, and a mixture thereof;
• α5 and β5 respectively represent a percent by mass, where 0.5≦α5≦10.0, and 0≦β5≦30.0.