Recording layer, optical data recording medium, and sputtering target
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorYuki TAUCHI
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Abstract
A recording layer for an optical data recording medium is described. Recording is performed by irradiating the recording layer with a laser beam. The recording layer contains a W oxide, an Fe oxide, and at least one of a Ta oxide and a Nb oxide. The recording layer contains 10-60 atomic % of Fe and a total of 3-50 atomic % of Ta and Nb relative to the total metal atoms therein.
Claims7
A recording layer for an optical data recording medium in which recording is performed by laser beam irradiation, the recording layer comprising:
- W oxide;
- Fe oxide;
- and
- at least one selected from the group consisting of Ta oxide and Nb oxide,
- wherein the recording layer comprises 10 to 60 atomic % Fe and 3 to 50 atomic % of the total of Ta and Nb, each atomic percentage relative to a total of all metal atoms in the recording layer.
A sputtering target to form a recording layer for an optical data recording medium by sputtering, in which recording of the recording layer is performed by laser beam irradiation, the sputtering target comprising:
- W;
- Fe;
- and
- at least one selected from the group consisting of Ta and Nb,
- wherein the sputtering target comprises 10 to 60 atomic % Fe, and 3 to 50 atomic % of the total of Ta and Nb, each atomic percentage relative to a total of all metal atoms in the sputtering target.
Dependencies are inferred from the claim text.