Recording layer for optical recording medium and optical recording medium
AssigneeSony Corporation
InventorYasuhiro Sone
Life of this patent
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Abstract
An optical recording medium includes a transmissive recording layer containing an oxide of a metal MA, an oxide of a metal MB, and an oxide of a metal MC. The metal MA is at least one kind selected from the group consisting of Mn and Ni. The metal MB is at least one kind selected from the group consisting of W and Mo. The metal Mc is Zr. An atomic ratio (MA/MB) of the metal MA to the metal MB is not less than 0.37 and not more than 1.31. The metal MC is contained in the transmissive recording layer at not less than 0.9 atomic % and not more than 27.5 atomic %.
Claims13
An optical recording medium comprising at least one transmissive recording layer containing an oxide of a metal MA, an oxide of a metal MB, an oxide of a metal MC, and an oxide of a metal ME,
- wherein the metal MA comprises at least one kind selected from a group consisting of Mn and Ni,
- wherein the metal MB comprises at least one kind selected from a group consisting of W and Mo,
- wherein the metal MC comprises Zr,
- wherein the metal ME comprises Mg,
- wherein an atomic ratio (MA/MB) of the metal MA to the metal MB is not less than 0.37 and not more than 1.31, and
- wherein the metal MC is contained in the at least one transmissive recording layer at not less than 0.9 atomic % and not more than 27.5 atomic %.
An optical recording medium comprising at least one transmissive recording layer containing an oxide of a metal MA, an oxide of a metal MB, and an oxide of a metal MC,
- wherein the metal MA comprises both Mn and Ni,
- wherein the metal MB comprises at least one kind selected from a group consisting of W and Mo,
- wherein the metal MC comprises Zr,
- wherein an atomic ratio (MA/MB) of the metal MA to the metal MB is not less than 0.37 and not more than 1.31, and
- wherein the metal MC is contained in the at least one transmissive recording layer at not less than 0.9 atomic % and not more than 27.5 atomic %.
An optical recording medium comprising at least one transmissive recording layer containing an oxide of a metal MA, an oxide of a metal MB, and an oxide of a metal MC,
- wherein the metal MA comprises at least one kind selected from a group consisting of Mn and Ni,
- wherein the metal MB comprises both W and Mo,
- wherein the metal MC comprises Zr,
- wherein an atomic ratio (MA/MB) of the metal MA to the metal MB is not less than 0.37 and not more than 1.31, and
- wherein the metal MC is contained in the at least one transmissive recording layer at not less than 0.9 atomic % and not more than 27.5 atomic %.
A transmissive recording layer for an optical recording medium, comprising:
- an oxide of a metal MA;
- an oxide of a metal MB;
- an oxide of a metal MC;
- and
- an oxide of a metal ME,
- wherein the metal MA comprises at least one kind selected from a group consisting of Mn and Ni,
- wherein the metal MB comprises at least one kind selected from a group consisting of W and Mo,
- wherein the metal MC comprises Zr,
- wherein the metal ME comprises Mg,
- wherein an atomic ratio (MA/MB) of the metal MA to the metal MB is not less than 0.37 and not more than 1.31, and
- wherein the metal MC is contained in the transmissive recording layer at not less than 0.9 atomic % and not more than 27.5 atomic %.
Dependencies are inferred from the claim text.