Magneto-optical recording medium with stacked layer structure
AssigneeSony Corporation
InventorsYoshitaka Ochiai, Shunichi Hashimoto, Koichi Aso
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Abstract
A magneto-optical recording medium is disclosed in which a magneto-optical recording layer is formed by alternately stacking Co layers and Pt and/or Pd layers, and having a total thickness between 50 and 800 .ANG..
Claims16
A magneto-optical recording medium comprising a substrate and a multi-layered film having magneto-optical recording properties and a perpendicular anisotropy being formed on the substrate, said multi-layered film having a plurality of first layers and layers of a second group of layers arranged in a stack being formed by alternate stacking of a single first layer with at least one layer from the second group, each first layer being formed of a layer consisting of Co and each of the layers of the second group being selected from a group consisting of a layer of Pt, and a layer consisting of alternate layers of Pt and Pd, said multi-layered film having a total thickness in the range of between 50 .ANG. and 800 .ANG. and each of said first layers having a thickness in the range of 1 .ANG. to 9 .ANG..
A magneto-optical recording medium comprising a substrate and a multi-layered film having magneto-optical recording properties and a perpendicular anisotropy being formed on the substrate, said multi-layered film having a plurality of first layers and second layers arranged in a stack being formed by alternate stacking of a single first layer with a second layer, each first layer being formed of a layer consisting of Co and each second layer being selected from a group consisting of a layer of Pt, a layer of Pt-Pd alloy and a layer of alternate layers of Pt and Pd having a thickness in a range of between 2 .ANG. and 40 .ANG., said multi-layered film having a total thickness in the range of between 50 .ANG. and 800 .ANG. and each of said first layers having a thickness in a range of 1 .ANG. to 9.ANG..
Dependencies are inferred from the claim text.