Magneto-optical recording medium
AssigneeFujitsu Limited
InventorsRyo Kurita, Ken Tamanoi, Shoyu Ito, Motonobu Mihara
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Abstract
The present invention provides a magneto-optical recording medium including a recording layer, an intermediate layer and a reproducing layer stacked in this order. Information recorded in the recording layer is transferred to the reproducing layer through the intermediate layer so that the information is reproduced. The reproducing layer includes an upper reproducing layer, a coupling layer, and a lower reproducing layer formed in this order on the intermediate layer. Magnetic information in the upper reproducing layer in an area whose temperature is increased to a predetermined temperature is transferred to the lower reproducing layer through the coupling layer.
Claims4
A magneto-optical recording medium comprising a recording layer, an intermediate layer and a reproducing layer stacked in this order,
- information recorded in the recording layer being transferred to the reproducing layer through the intermediate layer so that the information is reproduced,
- wherein the reproducing layer comprises an upper reproducing layer, a coupling layer and a lower reproducing layer formed in this order on the intermediate layer, and
- magnetic information in the upper reproducing layer in an area whose temperature is increased to a predetermined temperature is transferred to the lower reproducing layer through the coupling layer,
- wherein the lower reproducing layer, the upper reproducing layer and the coupling layer are formed of a transition metal magnetization dominant magnetic film, a rare-earth magnetization dominant magnetic film and an antiferromagnetic material, respectively, and the coupling layer has a Néel temperature higher than the temperature of the upper reproducing layer which is increased to the predetermined temperature at the transfer of information.
Dependencies are inferred from the claim text.